Source:http://www4.wiwiss.fu-berlin.de/dailymed/resource/drugs/3220
| Subject | Predicate | Object | Context |
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| dailymed-drugs:3220 | rdf:type | http://www4.wiwiss.fu-berli... | lld:dailymed |
| dailymed-drugs:3220 | rdf:type | dailymed-instance:drugs | lld:dailymed |
| dailymed-drugs:3220 | rdfs:label | RISPERDAL CONSTA (Kit) | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:dosage | For patients who have never taken oral RISPERDAL, it is recommended to establish tolerability with oral RISPERDAL prior to initiating treatment with RISPERDAL CONSTA (risperidone). RISPERDAL CONSTA should be administered every 2 weeks by deep intramuscular (IM) gluteal injection. Each injection should be administered by a health care professional using the enclosed safety needle . Injections should alternate between the two buttocks. Do not administer intravenously. The recommended dose is 25 mg IM every 2 weeks. Although dose response for effectiveness has not been established for RISPERDAL CONSTA, some patients not responding to 25 mg may benefit from a higher dose of 37.5 mg or 50 mg. The maximum dose should not exceed 50 mg RISPERDAL CONSTA every 2 weeks. No additional benefit was observed with dosages greater than 50 mg RISPERDAL CONSTA; however, a higher incidence of adverse effects was observed. A lower initial dose of 12.5 mg may be appropriate when clinical factors warrant dose adjustment, such as in patients with hepatic or renal impairment, for certain drug interactions that increase risperidone plasma concentrations , or in patients who have a history of poor tolerability to psychotropic medications. The efficacy of the 12.5 mg dose has not been investigated in clinical trials. Oral RISPERDAL (or another antipsychotic medication) should be given with the first injection of RISPERDAL CONSTA and continued for 3 weeks (and then discontinued) to ensure that adequate therapeutic plasma concentrations are maintained prior to the main release phase of risperidone from the injection site (see CLINICAL PHARMACOLOGY). Upward dosage adjustment should not be made more frequently than every 4 weeks. The clinical effects of this dose adjustment should not be anticipated earlier than 3 weeks after the first injection with the higher dose. In patients with clinical factors such as hepatic or renal impairment or certain drug interactions that increase risperidone plasma concentrations , dose reduction as low as 12.5 mg may be appropriate. The efficacy of the 12.5 mg dose has not been investigated in clinical trials. Do not combine two different dosage strengths of RISPERDAL CONSTA in a single administration.<br/>Pediatric Use: RISPERDAL CONSTA has not been studied in children younger than 18 years old.<br/>Dosage in Special Populations: For elderly patients treated with RISPERDAL CONSTA, the recommended dosage is 25 mg IM every 2 weeks. Oral RISPERDAL (or another antipsychotic medication) should be given with the first injection of RISPERDAL CONSTA and should be continued for 3 weeks to ensure that adequate therapeutic plasma concentrations are maintained prior to the main release phase of risperidone from the injection site . Patients with renal or hepatic impairment should be treated with titrated doses of oral RISPERDAL prior to initiating treatment with RISPERDAL CONSTA. The recommended starting dose is 0.5 mg oral RISPERDAL b.i.d. during the first week, which can be increased to 1 mg b.i.d. or 2 mg once daily during the second week. If a total daily dose of at least 2 mg oral RISPERDAL is well tolerated, an injection of 25 mg RISPERDAL CONSTAcan be administered every 2 weeks. Alternatively, a starting dose of RISPERDAL CONSTA of 12.5 mg may be appropriate. The efficacy of the 12.5 mg dose has not been investigated in clinical trials. Oral supplementation should be continued for 3 weeks after the first injection until the main release of risperidone from the injection site has begun. In some patients, slower titration may be medically appropriate. Patients with renal impairment may have less ability to eliminate risperidone than normal adults. Patients with impaired hepatic function may have an increase in the free fraction of the risperidone, possibly resulting in an enhanced effect . Elderly patients and patients with a predisposition to hypotensive reactions or for whom such reactions would posea particular risk should be instructed in nonpharmacologic interventions that help to reduce the occurrence of orthostatic hypotension (e.g., sitting on the edge of the bed for several minutes before attempting to stand in the morning and slowly rising from a seated position). These patients should avoid sodium depletion or dehydration, and circumstances that accentuate hypotension (alcohol intake, high ambient temperature, etc.). Monitoring of orthostatic vital signs should be considered .<br/>Maintenance Therapy: Although no controlled studies have been conducted to answer the question of how long patients should be treated with RISPERDAL CONSTA, oral risperidone has been shown to be effective in delaying time to relapse in longer-term use. It is recommended that responding patients be continued on treatment with RISPERDAL CONSTA at the lowest dose needed. Patients should be periodically reassessed to determine the need for continued treatment.<br/>Reinitiation of Treatment in Patients Previously Discontinued: There are no data to specifically address reinitiation of treatment. When restarting patients who have had an interval off treatment with RISPERDAL CONSTA, supplementation with oral RISPERDAL (or another antipsychotic medication) should be administered.<br/>Switching from Other Antipsychotics: There are no systematically collected data to specifically address switching schizophrenic patients from other antipsychotics to RISPERDAL CONSTA, or concerning concomitant administration with other antipsychotics. Previous antipsychotics should be continued for 3 weeks after the first injection of RISPERDAL CONSTA to ensure that therapeutic concentrations are maintained until the main release phase of risperidone from the injection site has begun . For schizophrenic patients who have never taken oral RISPERDAL, it is recommended to establish tolerability with oral RISPERDAL prior to initiating treatment with RISPERDAL CONSTA. As recommended with other antipsychotic medications, the need for continuing existing EPS medication should be re-evaluated periodically.<br/>Co-Administration of RISPERDAL CONSTA with Certain Other Medications: Co-administration of carbamazepine and other CYP 3A4 enzyme inducers (e.g., phenytoin, rifampin, phenobarbital) with risperidone would be expected to cause decreases in the plasma concentrations of active moiety (the sum of risperidone and 9-hydroxyrisperidone), which could lead to decreased efficacy of RISPERDAL CONSTA treatment. The dose of risperidone needs to be titrated accordingly for patients receiving these enzyme inducers, especially during initiation or discontinuation of therapy with these inducers . At the initiation of therapy with carbamazepine or other known CYP 3A4 hepatic enzyme inducers, patients should be closely monitored during the first 4-8 weeks, since the dose of RISPERDAL CONSTA may need to be adjusted. A dose increase, or additional oral RISPERDAL, may need to be considered. On discontinuation of carbamazepine or other CYP 3A4 hepatic enzyme inducers, the dosage of RISPERDAL CONSTA should be re-evaluated and, if necessary, decreased. Patients may be placed on a lower dose of RISPERDAL CONSTA between 2 to 4 weeks before the planned discontinuation of carbamazepine or other CYP 3A4 enzyme inducers to adjust for the expected increase in plasma concentrations of risperidone plus 9-hydroxyrisperidone. For patients treated with the recommended dose of 25 mg RISPERDAL CONSTA and discontinuing from carbamazepine or other CYP 3A4 enzyme inducers, it is recommended to continue treatment with the 25-mg dose unless clinical judgment necessitates lowering the RISPERDAL CONSTA dose to 12.5 mg or necessitates interruption of RISPERDAL CONSTA treatment. The efficacy of the 12.5 mg dose has not been investigated in clinical trials. Fluoxetine and paroxetine, CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5-2.8 fold and 3-9 fold respectively. Fluoxetine did not affect the plasma concentration of 9-hydroxyrisperidone. Paroxetine lowered the concentration of 9-hydroxyrisperidone by about 10%. The dose of risperidone needs to be titrated accordingly when fluoxetine or paroxetine is co-administered. When either concomitant fluoxetine or paroxetine is initiated or discontinued, the physician should re-evaluate the dose of RISPERDAL CONSTA. When initiation of fluoxetine or paroxetine is considered, patients may be placed on a lower dose of RISPERDAL CONSTA between 2 to 4 weeks before the planned start of fluoxetine or paroxetine therapy to adjust for the expected increase in plasma concentrations of risperidone. When fluoxetine or paroxetine is initiated in patients receiving the recommended dose of 25 mg RISPERDAL CONSTA, it is recommended to continue treatment with the 25-mg dose unless clinical judgment necessitates lowering the RISPERDAL CONSTA dose to 12.5 mg or necessitates interruption of RISPERDAL CONSTA treatment. When RISPERDAL CONSTA is initiated in patients already receiving fluoxetine or paroxetine, a starting dose of 12.5 mg can be considered. The efficacy of the 12.5 mg dose has not been investigated in clinical trials. The effects of discontinuation of concomitant fluoxetine or paroxetine therapy on the pharmacokinetics of risperidone and 9-hydroxyrisperidone havenot been studied.<br/>Instructions for Use: RISPERDAL CONSTA must be suspended only in the diluent supplied in the dose pack, and must be administered with the needle supplied in the dose pack. All components are required for administration. Do not substitute any components of the dose pack. To assure that the intended dose of risperidone is delivered, the full contents from the vial must beadministered. Administration of partial contents may not deliver the intended dose of risperidone. Remove the dose pack of RISPERDAL CONSTA from the refrigerator and allow it to come to room temperature prior to reconstitution. Upon suspension in the diluent, it is recommended to use RISPERDAL CONSTA immediately. RISPERDAL CONSTA must be used within 6 hours of suspension. Resuspension of RISPERDAL CONSTA will be necessary prior to administration, as settling will occur over time once the product is in suspension. Keeping the vial upright, shake vigorously back and forth for as long as it takes to resuspend the microspheres. Once in suspension, the product should not be exposed to temperatures above 77��F (25��C). Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:descripti... | RISPERDAL (risperidone) is a psychotropic agent belonging to the chemical class of benzisoxazole derivatives. The chemical designation is 3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is CHFNOand its molecular weight is 410.49. The structural formula is: Risperidone is practically insoluble in water, freely soluble in methylene chloride, and soluble in methanol and 0.1 N HCl. RISPERDAL CONSTA(risperidone) Long-Acting Injection is a combination of extended release microspheres for injection and diluent for parenteral use. The extended release microspheres formulation is a white to off-white, free-flowing powder that is available in dosage strengths of 12.5, 25, 37.5, or 50 mg risperidone per vial. Risperidone is micro-encapsulated in 7525 polylactide-co-glycolide (PLG) at a concentration of 381 mg risperidone per gram of microspheres. The diluent for parenteral use is a clear, colorless solution. Composition of the diluent includes polysorbate 20, sodium carboxymethyl cellulose, disodium hydrogen phosphate dihydrate, citric acid anhydrous, sodium chloride, sodium hydroxide, and water for injection. The microspheres are suspended in the diluent prior to injection. RISPERDALCONSTA is provided as a dose pack, consisting of a vial containing the microspheres, a pre-filled syringe containing the diluent, a SmartSite Needle-Free Vial Access Device, and one Needle-Pro 20 G TW safety needle. | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:clinicalP... | Pharmacodynamics: The mechanism of action of RISPERDAL (risperidone), as with other drugs used to treat schizophrenia, is unknown. However, it has been proposed that the drug's therapeutic activity in schizophrenia is mediated through a combination of dopamine Type 2 (D) and serotonin Type 2 (5HT) receptor antagonism. Antagonism at receptors other than Dand 5HTmay explain some of the other effects of RISPERDAL. RISPERDAL is a selective monoaminergic antagonist with high affinity (Ki of 0.12 to 7.3 nM) for the serotonin Type 2 (5HT), dopamine Type 2 (D),��1 and��2 adrenergic, and Hhistaminergic receptors. RISPERDAL acts as an antagonist at other receptors, but with lower potency. RISPERDAL has low to moderate affinity (Ki of 47 to 253 nM) for the serotonin 5HT, 5HT, and 5HTreceptors, weak affinity (Ki of 620 to 800 nM) for the dopamine Dand haloperidol-sensitive sigma site, and no affinity (when tested at concentrations>10M) for cholinergic muscarinic or��1 and��2 adrenergic receptors.<br/>Pharmacokinetics:<br/>Absorption: After a single intramuscular (gluteal) injection of RISPERDAL CONSTA (risperidone), there is a small initial release of the drug (<about 1% of the dose), followed by a lag time of 3 weeks. The main release of the drug starts from 3 weeks onward, is maintained from 4 to 6 weeks, and subsides by 7 weeks following the intramuscular (IM) injection. Therefore, oral antipsychotic supplementation should be given during the first 3 weeks of treatment with RISPERDAL CONSTA to maintain therapeutic levels until the main release of risperidone from the injection site has begun (see DOSAGE AND ADMINISTRATION). Following single doses of RISPERDAL CONSTA, the pharmacokinetics of risperidone, 9-hydroxyrisperidone (the major metabolite), and risperidone plus 9-hydroxyrisperidone were linear in the dosing range of 12.5 mg to 50 mg. The combination of the release profile and the dosage regimen (IM injections every 2 weeks) of RISPERDAL CONSTA results in sustained therapeutic concentrations. Steady-state plasma concentrations are reached after 4 injections and are maintained for 4 to 6 weeks after the last injection. Following multiple doses of 25 mg to 50 mg RISPERDAL CONSTA, plasma concentrations of risperidone, 9-hydroxyrisperidone and risperidone plus 9-hydroxyrisperidone were linear.<br/>Distribution: Once absorbed, risperidone is rapidly distributed. The volume of distribution is 1-2 L/kg. In plasma, risperidone is bound to albumin and��1-acid glycoprotein. The plasma protein binding of risperidone is approximately 90%, and that of its major metabolite, 9-hydroxyrisperidone, is 77%. Neither risperidone nor 9-hydroxyrisperidone displaces each other from plasma binding sites. High therapeutic concentrations of sulfamethazine (100 mcg/mL), warfarin (10 mcg/mL), and carbamazepine (10 mcg/mL) caused only a slight increase in the free fraction of risperidone at 10 ng/mL and of 9-hydroxyrisperidone at 50 ng/mL, changes of unknown clinical significance.<br/>Metabolism and Drug Interactions: Risperidone is extensively metabolized in the liver. The main metabolic pathway is through hydroxylation of risperidone to 9-hydroxyrisperidone by the enzyme, CYP 2D6. A minor metabolic pathway is through N-dealkylation. The main metabolite, 9-hydroxyrisperidone, has similar pharmacological activity as risperidone. Consequently, the clinical effect of the drug (i.e., the active moiety) results from the combined concentrations of risperidone plus 9-hydroxyrisperidone. CYP 2D6, also called debrisoquin hydroxylase, is the enzyme responsible for metabolism of many neuroleptics, antidepressants, antiarrhythmics, and other drugs. CYP 2D6 is subject to genetic polymorphism (about 6%-8% of Caucasians, and a very low percentage of Asians, have little or no activity and are���poor metabolizers���) and to inhibition by a variety of substrates and some non-substrates, notably quinidine. Extensive CYP 2D6 metabolizers convert risperidone rapidly into 9-hydroxyrisperidone, whereas poor CYP 2D6 metabolizers convert it much more slowly. Although extensive metabolizers have lower risperidone and higher 9-hydroxyrisperidone concentrations than poor metabolizers, the pharmacokinetics of the active moiety, after single and multiple doses, are similar in extensive and poor metabolizers. The interactions of RISPERDAL CONSTA and other drugs have not been systematically evaluated in human subjects. Risperidone could be subject to two kinds of drug-drug interactions . First, inhibitors of CYP 2D6 interfere with conversion of risperidone to 9-hydroxyrisperidone. This occurs with quinidine, giving essentially all recipients a risperidone pharmacokinetic profile typical of poor metabolizers. The therapeutic benefits and adverse effects of risperidone in patients receiving quinidine have notbeen evaluated, but observations in a modest number (n���70) of poor metabolizers given risperidone do not suggest important differences between poor and extensive metabolizers. Second, co-administration of carbamazepine and other known enzyme inducers (e.g., phenytoin, rifampin, and phenobarbital) with risperidone cause a decrease in the combined plasma concentrations of risperidone and 9-hydroxyrisperidone . It would also be possible for risperidone to interfere with metabolism of other drugs metabolized by CYP 2D6. Relatively weak binding of risperidone to the enzyme suggests this is unlikely. In a drug interaction study in schizophrenic patients, 11 subjects received oral risperidone titrated to 6 mg/day for 3 weeks, followed by concurrent administration of carbamazepine for an additional 3 weeks. During co-administration, the plasma concentrations of risperidone and its pharmacologically active metabolite, 9-hydroxyrisperidone, were decreased by about 50%. Plasma concentrations of carbamazepine did not appear to be affected. Co-administration of other known enzyme inducers (e.g., phenytoin, rifampin, and phenobarbital) with risperidone may cause similar decreases in the combined plasma concentrations of risperidone and 9-hydroxyrisperidone, which could lead to decreased efficacy of risperidone treatment (see PRECAUTIONS - Drug Interactions and DOSAGE AND ADMINISTRATION - Co-Administration of RISPERDAL' CONSTA' with Certain Other Medications). Fluoxetine (20 mg QD) and paroxetine (20 mg QD) have been shown to increase the plasma concentration of risperidone 2.5-2.8 fold and 3-9 fold respectively. Fluoxetine did not affect the plasma concentration of 9-hydroxyrisperidone. Paroxetine lowered the concentration of 9-hydroxyrisperidone by about 10% (see PRECAUTIONS���Drug Interactions and DOSAGE AND ADMINISTRATION - Co-Administration of RISPERDAL'CONSTA' with Certain Other Medications). Repeated oral doses of risperidone (3 mg BID) did not affect the exposure (AUC) or peak plasma concentrations (C) of lithium (n=13) . Repeated oral doses of risperidone (4 mg QD) did not affect the pre-dose or average plasma concentrations and exposure (AUC) of valproate (1000 mg/day in three divided doses) compared to placebo (n=21). However, there was a 20% increase in valproate peak plasma concentration (C) after concomitant administration of risperidone . There were no significant interactions between oral risperidone (1 mg QD) and erythromycin (500 mg QID) . Cimetidine and ranitidine increased the bioavailability of risperidone by 64% and 26%, respectively. However, cimetidine did not affect the AUC of the active moiety, whereas ranitidine increased the AUC of the active moiety by 20%. Amitriptyline did not affect the pharmacokinetics of risperidone or the active moiety. In drug interaction studies, risperidone did not significantly affect the pharmacokinetics of donepezil and galantamine, which are metabolized by CYP 2D6. RISPERDAL' (0.25 mg BID) did not show a clinically relevant effect on the pharmacokinetics of digoxin.<br/>Excretion: Risperidone and its metabolites are eliminated via the urine and, to a much lesser extent, via the feces. As illustrated by a mass balance study of a single 1 mg oral dose ofC-risperidone administered as solution to three healthy male volunteers, total recovery of radioactivity at 1 week was 84%, including 70% in the urine and 14% in the feces. The apparent half-life of risperidone plus 9-hydroxyrisperidone following RISPERDAL CONSTA administration is 3 to 6 days, and is associated with a monoexponential decline in plasma concentrations. This half-life of 3-6 days is related to the erosion of the microspheres and subsequent absorption of risperidone. The clearance of risperidone and risperidone plus 9-hydroxyrisperidone was 13.7 L/h and 5.0 L/h in extensive CYP 2D6 metabolizers, and 3.3 L/h and 3.2 L/h in poor CYP 2D6 metabolizers, respectively. No accumulation of risperidone was observed during long-term use (up to 12 months) in patients treated every 2 weeks with 25 mg or 50 mg RISPERDAL CONSTA. The elimination phase is complete approximately 7 to 8 weeks after the last injection.<br/>Special Populations:<br/>Renal Impairment: In patients with moderate to severe renal disease treated with oral RISPERDAL, clearance of the sum of risperidone and its active metabolite decreased by 60% compared with young healthy subjects. Although patients with renal impairment were not studied with RISPERDAL CONSTA, it is recommended that patients with renal impairment be carefully titrated on oral RISPERDAL before treatment with RISPERDAL CONSTA is initiated at a dose of 25 mg. A lower initial dose of 12.5 mg may be appropriate when clinical factors warrant dose adjustment, such as in patients with renal impairment. (see PRECAUTIONS - Use in Patients with Concomitant Illness and DOSAGE AND ADMINISTRATION - Dosage in Special Populations).).<br/>Hepatic Impairment: While the pharmacokinetics of oral RISPERDAL in subjects with liver disease were comparable to those in young healthy subjects, the mean free fraction of risperidone in plasma was increased by about 35% because of the diminished concentration of both albumin and��-acid glycoprotein. Although patients with hepatic impairment were not studied with RISPERDAL CONSTA, it is recommended that patients with hepatic impairment be carefully titrated on oral RISPERDAL before treatment with RISPERDAL CONSTA is initiated at a dose of 25 mg. A lower initial dose of 12.5 mg may be appropriate when clinical factors warrant dose adjustment, such as in patients with hepatic impairment. (see PRECAUTIONS - Use in Patients with Concomitant Illness and DOSAGE AND ADMINISTRATION - Dosage in Special Populations).<br/>Elderly: In an open-label trial, steady-state concentrations of risperidone plus 9-hydroxyrisperidone in otherwise healthy elderly patients (���65 years old) treated with RISPERDAL CONSTA for up to 12 months fell within the range of values observed in otherwise healthy nonelderly patients. Dosing recommendations are the same for otherwise healthy elderly patients and nonelderly patients .<br/>Race and Gender Effects: No specific pharmacokinetic study was conducted to investigate race and gender effects, but a population pharmacokinetic analysis did not identify important differences in the disposition of risperidone due to gender (whether or not corrected for body weight) or race. | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:activeIng... | dailymed-ingredient:risperi... | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:contraind... | RISPERDAL CONSTA (risperidone) is contraindicated in patients with a known hypersensitivity to the product or any of its components. | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:supply | RISPERDAL CONSTA (risperidone) is available in dosage strengths of 12.5, 25, 37.5, or 50 mg risperidone. It is provided as a dose pack, consisting of a vial containing the risperidone microspheres, a pre-filled syringe containing 2 mL of diluent for RISPERDAL CONSTA, a SmartSite Needle-Free Vial Access Device, and one Needle-Pro safety needle for intramuscular injection (20 G TW needle with needle protection device). 12.5-mg vial/kit (NDC 50458-309-11): 12.5 mg of a white to off-white powder provided in a vial with a violet flip-off cap (NDC 50458-309-01). 25-mg vial/kit (NDC 50458-306-11): 25 mg of a white to off-white powder provided in a vial with a pink flip-off cap (NDC 50458-306-01). 37.5-mg vial/kit (NDC 50458-307-11): 37.5 mg of a white to off-white powder provided in a vial with a green flip-off cap (NDC 50458-307-01). 50-mg vial/kit (NDC 50458-308-11): 50 mg of a white to off-white powder provided in a vial with a blue flip-off cap (NDC 50458-308-01).<br/>Storage and Handling: The entire dose pack should be stored in the refrigerator (36��- 46��F; 2��- 8��C) and protected from light. If refrigeration is unavailable, RISPERDAL CONSTA can be stored at temperatures not exceeding 77��F (25��C) for no more than 7 days prior to administration. Do not expose unrefrigerated product to temperatures above 77��F (25��C). Keep out of reach of children. 7519509April 2007��Janssen 2003 Risperidone is manufactured by:Janssen Pharmaceutical Ltd.Wallingstown, Little Island, County Cork, Ireland Microspheres are manufactured by:Alkermes Controlled Therapeutics IIWilmington, Ohio Diluent is manufactured by:Vetter Pharma Fertigung GmbH&Co. KGRavensburg or Largenargen, Germany or RISPERDAL CONSTA is distributed by:Janssen, L.P.Titusville, NJ 08560 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:genericDr... | http://www4.wiwiss.fu-berli... | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:boxedWarn... | Increased Mortality in Elderly Patients with Dementia���Related Psychosis Elderly patients with dementia-related psychosis treated with atypical antipsychotic drugs are at an increased risk of death compared to placebo. Analyses of seventeen placebo controlled trials (modal duration of 10 weeks) in these patients revealed a risk of death in the drug-treated patients of between 1.6 to 1.7 times that seen in placebo-treated patients. Over the course of a typical 10 week controlled trial, the rate of death in drug-treated patients was about 4.5%, compared to a rate of about 2.6% in the placebo group. Although the causes of death were varied, most of the deaths appeared to be either cardiovascular (e.g., heart failure, sudden death) or infectious (e.g., pneumonia) in nature. RISPERDALCONSTA(risperidone) is not approved for the treatment of patients with Dementia-Related Psychosis. | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:activeMoi... | dailymed-ingredient:risperi... | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:inactiveI... | dailymed-ingredient:polylac... | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:261 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:989 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:1984 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:3734 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:54 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:94 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:852 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:1025 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:1032 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:1377 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:1460 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:3423 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:3841 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:3852 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:347 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:possibleD... | diseasome-diseases:2216 | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:precautio... | General:<br/>Administration: RISPERDAL CONSTA should be injected into the gluteal muscle, and care must be taken to avoid inadvertent injection into a blood vessel. (see DOSAGE AND ADMINISTRATION and ADVERSE REACTIONS���Postintroduction Reports [retinal artery occlusion].)<br/>Orthostatic Hypotension: RISPERDAL CONSTA (risperidone) may induce orthostatic hypotension associated with dizziness, tachycardia, and in some patients, syncope, probably reflecting its alpha-adrenergic antagonistic properties. Syncope was reported in 0.8% (12/1499 patients) of patients treated with RISPERDAL CONSTA in multiple-dose studies. Patients should be instructed in nonpharmacologic interventions that help to reduce the occurrence of orthostatic hypotension (e.g., sitting on the edge of the bed for several minutes before attempting to stand in the morning and slowly rising from a seated position). RISPERDAL CONSTA should be used with particular caution in (1) patients with known cardiovascular disease (history of myocardial infarction or ischemia, heart failure, or conduction abnormalities), cerebrovascular disease, and conditions which would predispose patients to hypotension, e.g., dehydration and hypovolemia, and (2) in the elderly and patients with renal or hepatic impairment. Monitoring of orthostatic vital signs should be considered in all such patients, and a dose reduction should be considered if hypotension occurs. Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication.<br/>Seizures: During premarketing testing, seizures occurred in 0.3% (5/1499 patients) of patients treated with RISPERDAL CONSTA. Therefore, RISPERDAL CONSTA should be used cautiously in patients with a history of seizures.<br/>Dysphagia: Esophageal dysmotility and aspiration have been associated with antipsychotic drug use. Aspiration pneumonia is a common cause of morbidity and mortality in patients with advanced Alzheimer's dementia. RISPERDAL CONSTA and other antipsychotic drugs should be used cautiously in patients at risk for aspiration pneumonia. (See also Boxed Warning, WARNINGS: Increased Mortality in Elderly Patients with Dementia-Related Psychosis.)<br/>Osteodystrophy and Tumors in Animals: RISPERDAL CONSTA produced osteodystrophy in male and female rats in a 1-year toxicity study and a 2-year carcinogenicity study at a dose of 40 mg/kg administered IM every 2 weeks. RISPERDAL CONSTA produced renal tubular tumors (adenoma, adenocarcinoma) and adrenomedullary pheochromocytomas in male rats in the 2-year carcinogenicity study at 40 mg/kg administered IM every 2 weeks. In addition, RISPERDAL CONSTA produced an increase in a marker of cellular proliferation in renal tissue in males in the 1-year toxicity study and in renal tumor-bearing males in the 2-year carcinogenicity study at 40 mg/kg administered IM every 2 weeks. (Cellular proliferation was not measured at the low dose or in females in either study.) The effect dose for osteodystrophy and the tumor findings is 8 times the IM maximum recommended human dose (MRHD) (50 mg) on a mg/mbasis and is associated with a plasma exposure (AUC) 2 times the expected plasma exposure (AUC) at the IM MRHD. The no-effect dose for these findings was 5 mg/kg (equal to the IM MRHD on a mg/mbasis). Plasma exposure (AUC) at the no-effect dose was one third the expected plasma exposure (AUC) at the IM MRHD. Neither the renal or adrenal tumors, nor osteodystrophy, were seen in studies of orally administered risperidone. Osteodystrophy was not observed in dogs at doses up to 14 times (based on AUC) the IM MRHD in a 1-year toxicity study. The renal tubular and adrenomedullary tumors in male rats and other tumor findings are described in more detail under PRECAUTIONS, Carcinogenicity, Mutagenesis, Impairment of Fertility. The relevance of these findings to human risk is unknown.<br/>Hyperprolactinemia: As with other drugs that antagonize dopamine Dreceptors, risperidone elevates prolactin levels and the elevation persists during chronic administration. Risperdone is associated with higher levels of prolactin elevation than other antipsychotic agents. Hyperprolactinemia may suppress hypothalamic GnRH, resulting in reduced pituitary gonadotropin secretion. This, in turn, may inhibit reproductive function by impairing gonadal steroidogenesis in both female and male patients. Galactorrhea, amenorrhea, gynecomastia, and impotence have been reported in patients receiving prolactin-elevating compounds. Long-standing hyperprolactinemia when associated with hypogonadism may lead to decreased bone density in both female and male subjects. Tissue culture experiments indicate that approximately one-third of human breast cancers are prolactin-dependent in vitro, a factor of potential importance if the prescription of these drugs is contemplated in a patient with previously detected breast cancer. An increase in pituitary gland, mammary gland, and pancreatic islet cell neoplasia (mammary adenocarcinomas, pituitary and pancreatic adenomas) was observed in the resperidone carcinogenicity studies conducted in mice and rats (see PRECAUTIONS���Carcinogenesis, Mutagenesis, Impairment of Fertility). Neither clinical studies nor epidemiologic studies conducted to date have shown an association between chronic administration of this class of drugs and tumorigenesis in humans; the available evidence is considered too limited to be conclusive at this time.<br/>Potential for Cognitive and Motor Impairment: Somnolence was reported by 5% of patients treated with RISPERDAL CONSTA in multiple-dose trials. Since risperidone has the potential to impair judgment, thinking, or motor skills, patients should be cautioned about operating hazardous machinery, including automobiles, until they are reasonably certain that treatment with RISPERDAL CONSTA does not affect them adversely.<br/>Priapism: No cases of priapism have been reported in patients treated with RISPERDAL CONSTA. However, rare cases of priapism have been reported in patients treated with oral RISPERDAL. While the relationship of these events to oral RISPERDAL use has not been established, other drugs with alpha-adrenergic blocking effects have been reported to induce priapism, and it is possible that RISPERDAL may share this capacity. Severe priapism may require surgical intervention.<br/>Thrombotic Thrombocytopenic Purpura (TTP): A single case of TTP was reported in a 28 year-old female patient receiving oral RISPERDAL in a large, open premarketing experience (approximately 1300 patients). She experienced jaundice, fever, and bruising, but eventually recovered after receiving plasmapheresis. The relationship to RISPERDAL therapy is unknown.<br/>Antiemetic Effect: Risperidone has an antiemetic effect in animals; this effect may also occur in humans, and may mask signs and symptoms of overdosage with certain drugs or of conditions such as intestinal obstruction, Reye's syndrome, and brain tumor.<br/>Body Temperature Regulation: Disruption of body temperature regulation has been attributed to antipsychotic agents. Both hyperthermia and hypothermia have been reported in association with oral RISPERDAL use. Caution is advised when prescribing RISPERDAL CONSTA for patients who will be exposed to temperature extremes.<br/>Suicide: The possibility of a suicide attempt is inherent in schizophrenia, and close supervision of high-risk patients should accompany drug therapy. RISPERDAL CONSTA is to be administered by a health care professional (see DOSAGE and ADMINISTRATION); therefore, suicide due to an overdose is unlikely.<br/>Use in Patients with Concomitant Illness: Clinical experience with RISPERDAL CONSTA in patients with certain concomitant systemic illnesses is limited. Patients with Parkinson's Disease or Dementia with Lewy Bodies who receive antipsychotics, including RISPERDAL CONSTA, are reported to have an increased sensitivity to antipsychotic medications. Manifestations of this increased sensitivity have been reported to include confusion, obtundation, postural instability with frequent falls, extrapyramidal symptoms, and clinical features consistent with the neuroleptic malignant syndrome. Caution is advisable when using RISPERDAL CONSTA in patients with diseases or conditions that could affect metabolism or hemodynamic responses.RISPERDAL CONSTA has not been evaluated or used to any appreciable extent in patients with a recent history of myocardial infarction or unstable heart disease. Patients with these diagnoses were excluded from clinical studies during the product's premarket testing. Increased plasma concentrations of risperidone and 9-hydroxyrisperidone occur in patients with severe renal impairment (creatinine clearance<30 mL/min/1.73 m) treated with oral RISPERDAL; an increase in the free fraction of risperidone is also seen in patients with severe hepatic impairment. Patients with renal or hepatic impairment should be carefully titrated on oral RISPERDAL before treatment with RISPERDAL CONSTA is initiated at a dose of 25 mg. A lower initial dose of 12.5 mg may be appropriate when clinical factors warrant dose adjustment, such as in patients with renal or hepatic impairment. (see DOSAGE AND ADMINISTRATION - Dosage in Special Populations).<br/>Information for Patients: Physicians are advised to discuss the following issues with patients for whom they prescribe RISPERDAL CONSTA.<br/>Orthostatic Hypotension: Patients should be advised of the risk of orthostatic hypotension and instructed in nonpharmacologic interventions that help to reduce the occurrence of orthostatic hypotension (e.g., sitting on the edge of the bed for several minutes before attempting to stand in the morning and slowly rising from a seated position).<br/>Interference With Cognitive and Motor Performance: Because RISPERDAL CONSTA has the potential to impair judgment, thinking, or motor skills, patients should be cautioned about operating hazardous machinery, including automobiles, until they are reasonably certain that treatment with RISPERDAL CONSTA does not affect them adversely.<br/>Pregnancy: Patients should be advised to notify their physician if they become pregnant or intend to become pregnant during therapy and for at least 12 weeks after the last injection of RISPERDAL CONSTA.<br/>Nursing: Patients should be advised not to breast-feed an infant during treatment and for at least 12 weeks after the last injection of RISPERDAL CONSTA.<br/>Concomitant Medication: Patients should be advised to inform their physicians if they are taking, or plan to take, any prescription or over-the-counter drugs, since there is a potential for interactions.<br/>Alcohol: Patients should be advised to avoid alcohol during treatment with RISPERDAL CONSTA.<br/>Laboratory Tests: No specific laboratory tests are recommended.<br/>Drug Interactions: The interactions of RISPERDAL CONSTA and other drugs have not been systematically evaluated. Given the primary CNS effects of risperidone, caution should be used when RISPERDAL CONSTA is administered in combination with other centrally-acting drugs or alcohol. Because of its potential for inducing hypotension, RISPERDAL CONSTA may enhance the hypotensive effects of other therapeutic agents with this potential. RISPERDAL CONSTA may antagonize the effects of levodopa and dopamine agonists. Amytriptyline did not affect the pharmacokinetics of risperidone or the active moiety. Cimetidine and ranitidine increased the bioavailability of risperidone by 64% and 26%, respectively. However, cimetidine did not affect the AUC of the active moiety, whereas ranitidine increased the AUC of the active moiety by 20%. Chronic administration of clozapine with risperidone may decrease the clearance of risperidone.<br/>Carbamazepine and Other CYP 3A4 Enzyme Inducers: In a drug interaction study in schizophrenic patients, 11 subjects received oral risperidone titrated to 6 mg/day for 3 weeks, followed by concurrent administration of carbamazepine for an additional 3 weeks. During co-administration, the plasma concentrations of risperidone and its pharmacologically active metabolite, 9-hydroxyrisperidone, were decreased by about 50%. Plasma concentrations of carbamazepine did not appear to be affected. Co-administration of other known CYP 3A4 enzyme inducers (e.g., phenytoin, rifampin, and phenobarbital) with risperidone may cause similar decreases in the combined plasma concentrations of risperidone and 9-hydroxyrisperidone, which could lead to decreased efficacy of RISPERDAL CONSTA treatment. At the initiation of therapy with carbamazepine or other known CYP 3A4 hepatic enzyme inducers, patients should be closely monitored during the first 4-8 weeks, since the dose of RISPERDAL CONSTA may need to be adjusted. A dose increase, or additional oral RISPERDAL', may need to be considered. On discontinuation of carbamazepine or other CYP 3A4 hepatic enzyme inducers, the dosage of RISPERDAL CONSTA should be re-evaluated and, if necessary, decreased. Patients may be placed on a lower dose of RISPERDAL CONSTA between 2 to 4 weeks before the planned discontinuation of carbamazepine or other CYP3A4 enzyme inducers to adjust for the expected increase in plasma concentrations of risperidone plus 9-hydroxyrisperidone. For patients treated with the recommended dose of 25 mg RISPERDAL CONSTA and discontinuing from carbamazepine or other CYP 3A4 enzyme inducers, it is recommended to continue treatment with the 25-mg dose unless clinical judgment necessitates lowering the RISPERDAL CONSTA dose to 12.5 mg or necessitates interruption of RISPERDAL CONSTA treatment. (See also DOSAGE AND ADMINISTRATION). Theefficacy of the 12.5 mg dose has not been investigated in clinical trials.<br/>Fluoxetine and Paroxetine: Fluoxetine (20 mg QD) and paroxetine (20 mg QD), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5-2.8 fold and 3-9 fold, respectively. Fluoxetine did not affect the plasma concentration of 9-hydroxyrisperidone. Paroxetine lowered the concentration of 9-hydroxyrisperidone by about 10%. When either concomitant fluoxetine or paroxetine is initiated or discontinued, the physician should re-evaluate the dose of RISPERDAL CONSTA. When initiation of fluoxetine or paroxetine is considered, patients may be placed on a lower dose of RISPERDAL CONSTA between2 to 4 weeks before the planned start of fluoxetine or paroxetine therapy to adjust for the expected increase in plasma concentrations of risperidone. When fluoxetine or paroxetine is initiated in patients receiving the recommended dose of 25 mg RISPERDAL CONSTA, it is recommended to continue treatment with the 25-mg dose unless clinical judgment necessitates lowering the RISPERDAL CONSTA dose to 12.5 mg or necessitates interruption of RISPERDAL CONSTA treatment. When RISPERDAL CONSTA is initiated in patients already receiving fluoxetine or paroxetine, a starting dose of 12.5 mg can be considered. The efficacy of the 12.5 mg dose has not been investigated in clinical trials. (See also DOSAGE AND ADMINISTRATION).The effects of discontinuation of concomitant fluoxetine or paroxetine therapy on the pharmacokinetics of risperidone and 9-hydroxyrisperidone have not been studied.<br/>Lithium: Repeated oral doses of risperidone (3 mg BID) did not affect the exposure (AUC) or peak plasma concentrations (C) of lithium (n=13).<br/>Valproate: Repeated oral doses of risperidone (4 mg QD) did not affect the pre-dose or average plasma concentrations and exposure (AUC) of valproate (1000 mg/day in three divided doses) compared to placebo (n=21). However, there was a 20% increase in valproate peak plasma concentration (C) after concomitant administration of risperidone.<br/>Digoxin: RISPERDAL (0.25 mg BID) did not show a clinically relevant effect on the pharmacokinetics of digoxin.<br/>Drugs that Inhibit CYP 2D6 and Other CYP Isozymes: Risperidone is metabolized to 9-hydroxyrisperidone by CYP 2D6, an enzyme that is polymorphic in the population and that can be inhibited by a variety of psychotropic and other drugs . Drug interactions that reduce the metabolism of risperidone to 9-hydroxyrisperidone would increase the plasma concentrations of risperidone and lower the concentrations of 9-hydroxyrisperidone. Analysis of clinical studies involving a modest number of poor metabolizers (n���70 patients) does not suggest that poor and extensive metabolizers have different rates of adverse effects. No comparison of effectiveness in the two groups has been made. In vitro studies showed that drugs metabolized by other CYP isozymes, including 1A1, 1A2, 2C9, 2C19, and 3A4, are only weak inhibitors of risperidone metabolism. There were no significant interactions between risperidone and erythromycin .<br/>Drugs Metabolized by CYP 2D6: In vitro studies indicate that risperidone is a relatively weak inhibitor of CYP 2D6. Therefore, RISPERDAL CONSTA is not expected to substantially inhibit the clearance of drugs that are metabolized by this enzymatic pathway. In drug interaction studies, oral risperidone did not significantly affect the pharmacokinetics of donepezil and galantamine, which are metabolized by CYP 2D6.<br/>Carcinogenesis, Mutagenesis, Impairment of Fertility:<br/>Carcinogenesis - Oral: Carcinogenicity studies were conducted in Swiss albino mice and Wistar rats. Risperidone was administered in the diet at doses of 0.63, 2.5, and 10 mg/kg for 18 months to mice and for 25 months to rats. These doses are equivalent to 2.4, 9.4, and 37.5 times the oral maximum recommended human dose (MRHD) for schizophrenia (16 mg/day) on a mg/kg basis, or 0.2, 0.75, and 3 times the oral MRHD (mice) or 0.4, 1.5, and 6 times the oral MRHD (rats) on a mg/mbasis. A maximum tolerated dose was not achieved in male mice. There was a significant increase in pituitary gland adenomas in female mice at doses 0.75 and 3 times the oral MRHD on a mg/mbasis. There was a significant increase in endocrine pancreatic adenomas in male rats at doses 1.5 and 6 times the oral MRHD on a mg/mbasis. Mammary gland adenocarcinomas were significantly increased in female mice at all doses tested (0.2, 0.75, and 3 times the oral MRHD on a mg/mbasis), in female rats at all doses tested (0.4, 1.5, and 6 times the oral MRHD on a mg/mbasis), and in male rats at a dose 6 times the oral MRHD on a mg/mbasis.<br/>Carcinogenesis - IM: RISPERDAL CONSTA was evaluated in a 24-month carcinogenicity study in which SPF Wistar rats were treated every 2 weeks with IM injections of either 5 mg/kg or 40 mg/kg of risperidone. These doses are 1 and 8 times the MRHD (50 mg) on a mg/mbasis. A control group received injections of 0.9% NaCl, and a vehicle control group was injected with placebo microspheres. There was a significant increase in pituitary gland adenomas, endocrine pancreas adenomas, and adrenomedullary pheochromocytomas at 8 times the IM MRHD on a mg/mbasis. The incidence of mammary gland adenocarcinomas was significantly increased in female rats at both doses (1 and 8 times the IM MRHD on a mg/mbasis). A significant increase in renal tubular tumors (adenoma, adenocarcinomas) was observed in male rats at 8 times the IM MRHD on a mg/mbasis. Plasma exposures (AUC) in rats were 0.3 and 2 times (at 5 and 40 mg/kg, respectively) the expected plasma exposure (AUC) at the IM MRHD. Dopamine Dreceptor antagonists have been shown to chronically elevate prolactin levels in rodents. Serum prolactin levels were not measured during the carcinogenicity studies of oral risperidone; however, measurements taken during subchronic toxicity studies showed that oral risperidone elevated serum prolactin levels 5- to 6-fold in mice and rats at the same doses used in the oral carcinogenicity studies. Serum prolactin levels increased in a dose-dependent manner up to 6- and 1.5-fold in male and female rats, respectively, at the end of the 24-month treatment with RISPERDAL CONSTA every 2 weeks. Increases in the incidence of pituitary gland, endocrine pancreas, and mammary gland neoplasms have been found in rodents after chronic administration of other antipsychotic drugs and may be prolactin-mediated. The relevance for human risk of the findings of prolactin-mediated endocrine tumors in rodents is unknown (see PRECAUTIONS - Hyperprolactinemia).<br/>Mutagenesis: No evidence of mutagenic potential for oral risperidone was found in the in vitro Ames reverse mutation test, in vitro mouse lymphoma assay, in vitro rat hepatocyte DNA-repair assay, in vivo oral micronucleus test in mice, the sex-linked recessive lethal test in Drosophila, or the in vitro chromosomal aberration test in human lymphocytes or in Chinese hamster cells. In addition, no evidence of mutagenic potential was found in the in vitro Ames reverse mutation test for RISPERDAL CONSTA.<br/>Impairment of Fertility: Oral risperidone (0.16 to 5 mg/kg) was shown to impair mating, but not fertility, in Wistar rats in three reproductive studies (two mating and fertility studies and a multigenerational study) at doses 0.1 to 3 times the oral maximum recommended human dose (MRHD) (16 mg/day) on a mg/mbasis. The effect appeared to be in females, since impaired mating behavior was not noted in the mating and fertility study in which males only were treated. In a subchronic study in Beagle dogs in which oral risperidone was administered at doses of 0.31 to 5 mg/kg, sperm motility and concentration were decreased at doses 0.6 to 10 times the oral MRHD on a mg/mbasis. Dose-related decreases were also noted in serum testosterone at the same doses. Serum testosterone and sperm values partially recovered, but remained decreased after treatment was discontinued. No no-effect doses were noted in either rat or dog. No mating and fertility studies were conducted with RISPERDAL CONSTA.<br/>Pregnancy:<br/>Pregnancy Category C: The teratogenic potential of oral risperidone was studied in three embryofetal development studies in Sprague-Dawley and Wistar rats (0.63-10 mg/kg or 0.4 to 6 times the oral maximum recommended human dose [MRHD] on a mg/mbasis) and in one embryofetal development study in New Zealand rabbits (0.31-5 mg/kg or 0.4 to 6 times the oral MRHD on a mg/mbasis). The incidence of malformations was not increased compared to control in offspring of rats or rabbits given 0.4 to 6 times the oral MRHD on a mg/mbasis. In three reproductive studies in rats (two peri/post-natal development studies and a multigenerational study), there was an increase in pup deaths during the first 4 days of lactation at doses of 0.16-5 mg/kg or 0.1 to 3 times the oral MRHD on a mg/mbasis. It is not known whether these deaths were due to a direct effect on the fetuses or pups or to effects on the dams. There was no no-effect dose for increased rat pup mortality. In one peri/post-natal development study, there was an increase in stillborn rat pups at a dose of 2.5 mg/kg or 1.5 times the oral MRHD on a mg/mbasis. In a cross-fostering study in Wistar rats, toxic effects on the fetus or pups, as evidenced by a decrease in the number of live pups and an increase in the number of dead pups at birth (Day 0), and a decrease in birth weight in pups of drug-treated dams were observed. In addition, there was an increase in deaths by Day 1 among pups of drug-treated dams, regardless of whether or not the pups were cross-fostered. Risperidone also appeared to impair maternal behavior in that pup body weight gain and survival (from Days 1 to 4 of lactation) were reduced in pups born to control but reared by drug-treated dams. These effects were all noted at the one dose of risperidone tested, i.e., 5 mg/kg or 3 times the oral MRHD on a mg/mbasis. No studies were conducted with RISPERDAL CONSTA. Placental transfer of risperidone occurs in rat pups. There are no adequate and well-controlled studies in pregnant women. However, there was one report of a case of agenesis of the corpus callosum in an infant exposed to risperidone in utero. The causal relationship to oral RISPERDAL therapy is unknown. Reversible extrapyramidal symptoms in the neonate were observed following postmarketing use of risperidone during the last trimester of pregnancy. RISPERDAL CONSTA should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.<br/>Labor and Delivery: The effect of RISPERDAL CONSTA on labor and delivery in humans is unknown.<br/>Nursing Mothers: In animal studies, risperidone and 9-hydroxyrisperidone are excreted in milk. Risperidone and 9-hydroxyrisperidone are also excreted in human breast milk. Therefore, women should not breast-feed during treatment with RISPERDAL CONSTA and for at least 12 weeks after the last injection.<br/>Pediatric Use: RISPERDAL CONSTA has not been studied in children younger than 18 years old.<br/>Geriatric Use: In an open-label study, 57 clinically stable, elderly patients (���65 years old) with schizophrenia or schizoaffective disorder received RISPERDAL CONSTA every 2 weeks for up to 12 months. In general, no differences in the tolerability of RISPERDAL CONSTA were observed between otherwise healthy elderly and nonelderly patients. Therefore, dosing recommendations for otherwise healthy elderly patients are the same as for nonelderly patients. Because elderly patients exhibit a greater tendency to orthostatic hypotension than nonelderly patients, elderly patients should be instructed in nonpharmacologic interventions that help to reduce the occurrence of orthostatic hypotension (e.g., sitting on the edge of the bed for several minutes before attempting to stand in the morning and slowly rising from aseated position). In addition, monitoring of orthostatic vital signs should be considered in elderly patients for whom orthostatic hypotension is of concern (see CLINICAL PHARMACOLOGY, PRECAUTIONS, and DOSAGE AND ADMINISTRATION).<br/>Concomitant use with Furosemide in Elderly Patients with Dementia-Related Psychosis: In two of four placebo-controlled trials in elderly patients with dementia-related psychosis, a higher incidence of mortality was observed in patients treated with furosemide plus oral risperidone when compared to patients treated with oral risperidone alone or with oral placebo plus furosemide. No pathological mechanism has been identified to explain this finding, and no consistent pattern for cause of death was observed. An increase of mortality in elderly patients with dementia-related psychosis was seen with the use of oral risperidone regardless of concomitant use with furosemide. RISPERDAL CONSTA is not approved for the treatment of patients with dementia-related psychosis. (See also Boxed Warning, WARNINGS: Increased Mortality in Elderly Patients with Dementia-Related Psychosis.) | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:overdosag... | Human Experience: No cases of overdose were reported in premarketing studies with RISPERDAL CONSTA (risperidone). Because RISPERDAL CONSTA is to be administered by health care professionals, the potential for overdosage by patients is low. In premarketing experience with oral RISPERDAL (risperidone), there were eight reports of acute RISPERDAL overdosage, with estimated doses ranging from 20 to 300 mg and no fatalities. In general, reported signs and symptoms were those resulting from an exaggeration of the drug's known pharmacological effects, i.e., drowsiness and sedation, tachycardia and hypotension, and extrapyramidal symptoms. One case, involving an estimatedoverdose of 240 mg, was associated with hyponatremia, hypokalemia, prolonged QT, and widened QRS. Another case, involving an estimated overdose of 36 mg, was associated with a seizure. Postmarketing experience with oral RISPERDAL includes reports of acute overdose, with estimated doses of up to 360 mg. In general, the most frequently reported signs and symptoms are those resulting from an exaggeration of the drug's known pharmacological effects, i.e., drowsiness, sedation, tachycardia, hypotension, and extrapyramidal symptoms. Other adverse events reported since market introduction which were temporally (but not necessarily causally) related to oral RISPERDAL overdose include torsades de pointes, prolonged QT interval, convulsions, cardiopulmonary arrest, and rare fatality associated with multiple drug overdose.<br/>Management of Overdosage: In case of acute overdosage, establish and maintain an airway and ensure adequate oxygenation and ventilation. Cardiovascular monitoring should commence immediately and should include continuous electrocardiographic monitoring to detect possible arrhythmias. If antiarrhythmic therapy is administered, disopyramide, procainamide, and quinidine carry a theoretical hazard of QT prolonging effects that might be additive to those of risperidone. Similarly, it is reasonable to expect that the alpha-blocking properties of bretylium might be additive to those of risperidone, resulting in problematic hypotension. There is no specific antidote to oral RISPERDAL. Therefore, appropriate supportive measures should be instituted. The possibility of multiple drug involvement should be considered. Hypotension and circulatory collapse should be treated with appropriate measures, such as intravenous fluids and/or sympathomimetic agents (epinephrine and dopamine should not be used, since beta stimulation may worsen hypotension in the setting of risperidone-induced alpha blockade). In cases of severe extrapyramidal symptoms, anticholinergic medication should be administered. Close medical supervision and monitoring should continue until the patient recovers. | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:genericMe... | risperidone | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:fullName | RISPERDAL CONSTA (Kit) | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:adverseRe... | Adverse findings were assessed by spontaneous reports of adverse events, laboratory tests, vital signs, body weight, and ECGs. Adverse events were classified using the World Health Organization preferred terms. Treatment-emergent adverse events were defined as those events with an onset between the first dose and 49 days after the last dose. The prescriber should be aware that these figures cannot be used to predict the incidence of side effects in the course of usual medical practice where patient characteristics and other factors differ from those which prevailed in this clinical trial. Similarly, the cited frequencies cannot be compared with figures obtained from other clinical investigations involving different treatments, uses, and investigators. The cited figures, however, do provide the prescribing physician with some basis for estimating the relative contribution of drug and nondrug factors to the side effect incidence rate in the population studied.<br/>Associated with Discontinuation of Treatment: In the 12-week, placebo-controlled trial, the incidence of schizophrenic patients who discontinued treatment due to an adverse event was lower with RISPERDAL CONSTA (11%; 22/202 patients) than with placebo (13%; 13/98 patients).<br/>Incidence in Controlled Trials: The incidence of adverse reactions in the placebo-controlled trial was based on 202 schizophrenic patients treated with 25 or 50 mg RISPERDAL CONSTA and 98 schizophrenic patients treated with placebo for up to 12 weeks.<br/>Commonly Observed Adverse Events in Controlled Clinical Trials: Spontaneously reported, treatment-emergent adverse events with an incidence of 5% or greater in at least one of the RISPERDAL CONSTA groups (25 mg or 50 mg) and at least twice that of placebo were: somnolence, akathisia, parkinsonism, dyspepsia, constipation, dry mouth, fatigue, weight increase.<br/>Adverse Events Occurring at an Incidence of 2% or More in Patients Treated with RISPERDAL CONSTA:: Table 1 enumerates adverse events that occurred at an incidence of 2% or more, and were at least as frequent among patients treated with 25 mg or 50 mg RISPERDAL CONSTA���as patients treated with placebo in the 12-week, placebo-controlled trial. This table shows the percentage of patients in each dose group who spontaneously reported at least one episode of an event at some time during double-blind treatment. All patients were titrated to a dose of 4 mg oral RISPERDAL during a 1-week run-in period. Patients who received RISPERDAL CONSTA were given doses of oral RISPERDAL (2 mg for patients in the 25-mg group, and 4 mg for patients in the 50-mg group) during the 3 weeks after the first injection to provide therapeutic levels until the main release phase of risperidone from the injection site had begun. Patients who received placebo injections were given placebo tablets.<br/>Dose Dependency of Adverse Events:<br/>Vital Sign Changes:: RISPERDAL is associated with orthostatic hypotension and tachycardia . In the placebo-controlled trial, orthostatic hypotension was observed in 2% of patients treated with 25 mg or 50 mg RISPERDAL CONSTA .<br/>Weight Changes:: In the 12-week, placebo-controlled trial, 9% of patients treated with RISPERDAL CONSTA, compared with 6% of patients treated with placebo, experienced a weight gain of>7% of body weight at endpoint.<br/>Laboratory Changes:: The percentage of patients treated with RISPERDAL CONSTA who experienced potentially important changes in routine serum chemistry, hematology, or urinalysis parameters was similar to or less than that of placebo patients. Additionally, no patients discontinued treatment due to changes in serum chemistry, hematology, or urinalysis parameters.<br/>ECG Changes:: The electrocardiograms of 202 schizophrenic patients treated with 25 mg or 50 mg RISPERDAL CONSTA and 98 schizophrenic patients treated with placebo in a 12-week, double-blind, placebo-controlled trial were evaluated. Compared with placebo, there were no statistically significant differences in QTc intervals (using Fridericia's and linear correction factors) during treatment with RISPERDAL CONSTA. Between-group comparisons for pooled placebo-controlled trials with oral RISPERDAL revealed no statistically significant differences between risperidone and placebo in mean changes from baseline in ECG parameters, including QT, QTc, and PR intervals, and heart rate. When all oral RISPERDAL doses were pooled from randomized controlled trials in several indications, there was a mean increase in heart rate of 1 beat per minute compared to no change for placebo patients. In short-term schizophrenia trials, higher doses of oral risperidone (8-16 mg/day) were associated with a higher mean increase in heart rate compared to placebo (4-6 beats per minute).<br/>Pain Assessment and Local Injection Site Reactions:: The mean intensity of injection pain reported by patients using a visual analog scale (0 = no pain to 100 = unbearably painful) decreased in all treatment groups from the first to the last injection (placebo: 16.7 to 12.6; 25 mg: 12.0 to 9.0; 50 mg: 18.2 to 11.8). After the sixth injection (Week 10), investigator ratings indicated that 1% of patients treated with 25 mg or 50 mg RISPERDAL CONSTA experienced redness, swelling, or induration at the injection site.<br/>Other Events Observed During the Premarketing Evaluation of RISPERDAL CONSTA���: During its premarketing assessment, RISPERDAL CONSTA was administered to 1499 patients in multiple-dose studies. The conditions and duration of exposure to RISPERDAL CONSTA varied greatly, and included (in overlapping categories) open-label and double-blind studies, uncontrolled and controlled studies, inpatient and outpatient studies, fixed-dose and titration studies, and short-term and long-termexposure studies. In all studies, untoward events associated with this exposure were obtained by spontaneous report and were recorded by clinical investigators using terminology of their own choosing. Consequently, it is not possible to provide a meaningful estimate of the proportion of individuals experiencing adverse events without first grouping similar types of untoward events into a smaller number of standardized event categories. In the listings that follow, spontaneously reported adverse events were classified using World Health Organization (WHO) preferred terms. The frequencies presented, therefore, represent the proportion of the 1499 patients exposed to multiple doses of RISPERDAL CONSTA who experienced an event of the type cited on at least one occasion while receiving RISPERDAL CONSTA. All reported events are included except those already listed in Table 1, those events for which a drug cause was remote, those event terms which were so general as to be uninformative, and those events reported only once which did not have a substantial probability of being acutely life-threatening. It is important to emphasize that, although the reported events occurred during treatment with RISPERDAL CONSTA, they were not necessarily caused by it. Events are further categorized by body system and listed in order of decreasing frequency according to the following definitions: frequent adverse events are those occurring in at least 1/100 patients (only those not already listed in the tabulated results from the placebo-controlled trial appear in this listing); infrequent adverse events are those occurring in 1/100 to 1/1000 patients; and rare events are those occurring in fewer than 1/1000 patients. Psychiatric Disorders Frequent: anxiety, psychosis, depression, agitation, nervousness, paranoid reaction, delusion, apathy. Infrequent: anorexia, impaired concentration, impotence, emotional lability, manic reaction, decreased libido, increased appetite, amnesia, confusion, euphoria, depersonalization, paroniria, delirium, psychotic depression. Central and Peripheral Nervous System Disorders Frequent: hypertonia, dystonia. Infrequent: dyskinesia, vertigo, leg cramps, tardive dyskinesia, involuntary muscle contractions, paraesthesia, abnormal gait, bradykinesia, convulsions, hypokinesia, ataxia, fecal incontinence, oculogyric crisis, tetany, apraxia, dementia, migraine. Rare: neuroleptic malignant syndrome. In the integrated database of multiple-dose studies (1499 patients with schizophrenia or schizoaffective disorder), 9 patients (0.6%) treated with RISPERDAL CONSTA (all dosages combined) experienced an adverse event of tardive dyskinesia. Body as a Whole/General Disorders Frequent: back pain, chest pain, asthenia. Infrequent: malaise, choking. Gastrointestinal Disorders Frequent: nausea, vomiting, abdominal pain. Infrequent: gastritis, gastroesophageal reflux, flatulence, hemorrhoids, melena, dysphagia, rectal hemorrhage, stomatitis, colitis, gastric ulcer, gingivitis, irritable bowel syndrome, ulcerative stomatitis. Respiratory System Disorders Frequent: dyspnea. Infrequent: pneumonia, stridor, hemoptysis. Rare: pulmonary edema. Skin and Appendage Disorders Frequent: rash. Infrequent: eczema, pruritus, erythematous rash, dermatitis, alopecia, seborrhea, photosensitivity reaction, increased sweating. Metabolic and Nutritional Disorders Infrequent: hyperuricemia, hyperglycemia, hyperlipemia, hypokalemia, glycosuria, hypercholesterolemia, obesity, dehydration, diabetes mellitus, hyponatremia. Musculo-Skeletal System Disorders Frequent: arthralgia, skeletal pain. Infrequent: torticollis, arthrosis, muscle weakness, tendinitis, arthritis, arthropathy. Heart Rate and Rhythm Disorders Frequent: tachycardia. Infrequent: bradycardia, AV block, palpitation, bundle branch block. Rare: T-wave inversion. Cardiovascular Disorders Frequent: hypotension. Infrequent: postural hypotension. Urinary System Disorders Frequent: urinary incontinence. Infrequent: hematuria, micturition frequency, renal pain, urinary retention. Vision Disorders Infrequent: conjunctivitis, eye pain, abnormal accommodation. Reproductive Disorders, Female Frequent: amenorrhea. Infrequent: nonpuerperal lactation, vaginitis, dysmenorrhea, breast pain, leukorrhea. Resistance Mechanism Disorders Infrequent: abscess. Liver and Biliary System Disorders Frequent: increased hepatic enzymes. Infrequent: hepatomegaly, increased SGPT. Rare: bilirubinemia, increased GGT, hepatitis, hepatocellular damage, jaundice, fatty liver, increased SGOT. Reproductive Disorders, Male Infrequent: ejaculation failure. Application Site Disorders Frequent: injection site pain. Infrequent: injection site reaction. Hearing and Vestibular Disorders Infrequent: earache, deafness, hearing decreased. Red Blood Cell Disorders Frequent: anemia. White Cell and Resistance Disorders Infrequent: lymphadenopathy, leucopenia, cervical lymphadenopathy. Rare: granulocytopenia, leukocytosis, lymphopenia. Endocrine Disorders Infrequent: hyperprolactinemia, gynecomastia, hypothyroidism. Platelet, Bleeding and Clotting Disorders Infrequent: purpura, epistaxis. Rare: pulmonary embolism, hematoma, thrombocytopenia. Myo-, Endo-, and Pericardial and Valve Disorders Infrequent: myocardial ischemia, angina pectoris, myocardial infarction. Vascular (Extracardiac) Disorders Infrequent: phlebitis. Rare: intermittent claudication, flushing, thrombophlebitis.<br/>Postintroduction Reports: Adverse events reported since market introduction which were temporally (but not necessarily causally) related to oral RISPERDAL therapy include the following: anaphylactic reaction, angioedema, apnea, atrial fibrillation, cerebrovascular disorder, including cerebrovascular accident, diabetes mellitus aggravated, including diabetic ketoacidosis, hyperglycemia, intestinal obstruction, jaundice, mania, pancreatitis, Parkinson's disease aggravated, pituitary adenomas, pulmonary embolism, and QT prolongation. There have been rare reports of sudden death and/or cardiopulmonary arrest in patients receiving oral RISPERDAL. A causal relationship with oral RISPERDAL has not beenestablished. It is important to note that sudden and unexpected death may occur in psychotic patients whether they remain untreated or whether they are treated with other antipsychotic drugs. Retinal artery occlusion after injection of RISPERDAL CONSTA has been reported during postmarketing surveillance. This has been reported in the presence of abnormal arteriovenous anastomosis. | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:warning | Increased Mortality in Elderly Patients with Dementia-Related Psychosis: Elderly patients with dementia-related psychosis treated with atypical antipsychotic drugs are at an increased risk of death compared to placebo. RISPERDALCONSTA(risperidone) is not approved for the treatment of dementia-related psychosis (see Boxed Warning).<br/>Neuroleptic Malignant Syndrome (NMS): A potentially fatal symptom complex sometimes referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with antipsychotic drugs. Clinical manifestations of NMS are hyperpyrexia, muscle rigidity, altered mental status, and evidence of autonomic instability (irregular pulse or blood pressure, tachycardia, diaphoresis, and cardiac dysrhythmia). Additional signs may include elevated creatine phosphokinase, myoglobinuria (rhabdomyolysis), and acute renal failure. The diagnostic evaluation of patients with this syndrome is complicated. In arriving at a diagnosis, it is important to identify cases in which the clinical presentation includes both serious medical illness (e.g., pneumonia, systemic infection, etc.) and untreated or inadequately treated extrapyramidal signs and symptoms (EPS). Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. The management of NMS should include: (1) immediate discontinuation of antipsychotic drugs and other drugs not essential to concurrent therapy; (2) intensive symptomatic treatment and medical monitoring; and (3) treatment of any concomitant serious medical problems for which specific treatments are available. There is no general agreement about specific pharmacological treatment regimens foruncomplicated NMS. If a patient requires antipsychotic drug treatment after recovery from NMS, the potential reintroduction of drug therapy should be carefully considered. The patient should be carefully monitored, since recurrences of NMS have been reported.<br/>Tardive Dyskinesia: A syndrome of potentially irreversible, involuntary, dyskinetic movements may develop in patients treated with antipsychotic drugs. Although the prevalence of the syndrome appears to be highest among the elderly, especially elderly women, it is impossible to rely upon prevalence estimates to predict, at the inception of antipsychotic treatment, which patients are likely to develop the syndrome. Whether antipsychotic drug products differ in their potential to cause tardive dyskinesia is unknown. The risk of developing tardive dyskinesia and the likelihood that it will become irreversible are believed to increase as the duration of treatment and the total cumulative dose of antipsychotic drugs administered to the patient increase. However, the syndrome can develop, although much less commonly, after relatively brief treatment periods at low doses. There is no known treatment for established cases of tardive dyskinesia, although the syndrome may remit, partially or completely, if antipsychotic treatment is withdrawn. Antipsychotic treatment, itself, however, may suppress (or partially suppress) the signs and symptoms of the syndrome and thereby may possibly mask the underlying process. The effect that symptomatic suppression has upon the long-term course of the syndrome is unknown. Given these considerations, RISPERDAL CONSTA should be prescribed in a manner that is most likely to minimize the occurrence of tardive dyskinesia. Chronic antipsychotic treatment should generally be reserved for patients who suffer from a chronic illness that: (1) is known to respond to antipsychotic drugs, and (2) for whom alternative, equally effective, but potentially less harmful treatments are not available or appropriate. In patients who do require chronic treatment, the smallest dose and the shortest duration of treatment producing a satisfactory clinical response should be sought. The need for continued treatment should be reassessed periodically. If signs and symptoms of tardive dyskinesia appear in a patient treated with RISPERDAL CONSTA, drug discontinuation should be considered. However, some patients may require treatment with RISPERDAL CONSTA despite the presence of the syndrome.<br/>Cerebrovascular Adverse Events, Including Stroke, in Elderly Patients with Dementia-Related Psychosis: Cerebrovascular adverse events (e.g., stroke, transient ischemic attack), including fatalities, were reported in patients (mean age 85 years; range 73-97) in trials of oral risperidone in elderly patients with dementia-related psychosis. In placebo-controlled trials, there was a significantly higher incidence of cerebrovascular adverse events in patients treated with oral risperidone compared to patients treated with placebo. RISPERDAL CONSTA is not approved for the treatment of patients with dementia-related psychosis. (See also Boxed Warning, WARNINGS: Increased Mortality in Elderly Patients with Dementia-Related Psychosis.)<br/>Hyperglycemia and Diabetes Mellitus: Hyperglycemia, in some cases extreme and associated with ketoacidosis or hyperosmolar coma or death, has been reported in patients treated with atypical antipsychotics including RISPERDAL. Assessment of the relationship between atypical antipsychotic use and glucose abnormalities is complicated by the possibility of an increased background risk of diabetes mellitus in patients with schizophrenia and the increasing incidence of diabetes mellitus in the general population. Given these confounders, the relationship between atypical antipsychotic use and hyperglycemia-related adverse events is not completely understood. However, epidemiological studies suggest an increased risk of treatment-emergent hyperglycemia-related adverse events in patients treated with the atypical antipsychotics. Precise risk estimates for hyperglycemia-related adverse events in patients treated with atypical antipsychotics are not available. Patients with an established diagnosis of diabetes mellitus who are started on atypical antipsychotics should be monitored regularly for worsening of glucose control. Patients with risk factors for diabetes mellitus (e.g., obesity, family history of diabetes) who are starting treatment with atypical antipsychotics should undergofasting blood glucose testing at the beginning of treatment and periodically during treatment. Any patient treated with atypical antipsychotics should be monitored for symptoms of hyperglycemia including polydipsia, polyuria, polyphagia, and weakness. Patients who develop symptoms of hyperglycemia during treatment with atypical antipsychotics should undergo fasting blood glucose testing. In some cases, hyperglycemia has resolved when the atypical antipsychotic was discontinued; however, some patients required continuation of anti-diabetic treatment despite discontinuation of the suspect drug. | lld:dailymed |
| dailymed-drugs:3220 | dailymed-instance:indicatio... | RISPERDAL CONSTA(risperidone) is indicated for the treatment of schizophrenia. The efficacy of RISPERDAL CONSTA is based in part on a 12-week, placebo-controlled trial in schizophrenic inpatients or outpatients, along with extrapolation from the established efficacy of oral RISPERDAL in this population. The effectiveness of RISPERDAL CONSTA in longer-term use, that is, more than 12 weeks, has not been systematically evaluated in controlled trials. However, oral risperidone has been shown to be effective in delaying time to relapse in longer-term use. Patients should be periodically reassessed to determine the need for continued treatment . | lld:dailymed |
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