Linked Life Data

METROGEL (Gel)

Source:http://www4.wiwiss.fu-berlin.de/dailymed/resource/drugs/2848

Statements in which the resource exists as a subject.
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METROGEL (Gel)
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Areas to be treated should be cleansed before application of METROGEL (metronidazole gel), 1%. Apply and rub in a thin film of METROGEL (metronidazole gel), 1% once daily to entire affected area(s). Patients may use cosmetics after application of METROEL (metronidazole gel), 1%.
dailymed-instance:descripti...
METROGEL (metronidazole gel), 1% contains metronidazole. USP. Chemically, metronidazole is 2-methyl-5-nitro-1 H-imidazole-1-ethanol. The molecular formula for metronidazole is CHN. It has the following structural formula: Metronidazole has a molecular weight of 171.16. It is a white to pale yellow crystalline powder. It is slightly soluble in alcohol and has a solubility in water of 10 mg/mL at 20��C. Metronidazole is a member of the imidazole class of antibacterial agents and is classified as an antiprotozoal and anti-bacterial agent. METROGEL (metronidazole gel), 1% is an aqueous gel; each gram contains 10 mg of metronidazole in a base of betadex, edetate disodium, hydroxyethyl cellulose, methylparaben, niacinamide, phenoxyethanol, propylene glycol, propylparaben and purified water.
dailymed-instance:clinicalP...
The contribution to efficacy of individual components of the vehicle has not been established.<br/>Pharmacokinetics: Topical administration of a one gram dose of METROGEL (metronidazole gel), 1% to the face of 13 patients with moderate to severe rosacea once daily for 7 days resulted in a mean��SD C, of metronidazole of 32��9 ng/mL. The mean��SD AUCwas 595��154 ng*hr/mL. The mean Cand AUCare less than 1% of the value reported for a single 250 mg oral dose of metronidazole. The time to maximum plasma concentration (T) was 6-10 hours after topical application.<br/>Pharmacodynamics: The mechanisms by which metronidazole acts are unknown.
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METROGEL (metronidazole gel), 1% is contraindicated in those patients with a history of hypersensitivity to metronidazole or to any other ingredient in this formulation.
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METROEL (metronidazole gel), 1% is supplied as follows: 60 gram tube���NDC 0299-3820-60 60 gram tube with complimentary 4 fl oz Cetaphil Gentle Skin Cleanser���NDC 0299-3820-04 Keep out of the reach of children. Storage Conditions: Store at controlled room temperature: 20��to 25��C (68��to 77��F), excursions permitted between59��and 86��F (15��-30��C). Prescribing Information as of February 2007. Rx Only US Patent No. 6,881,726 Manufactured by:Galderma Production Canada Inc.Baie d'Urt��, QC, H9X 3S4 CanadaMade in Canada. Marketed by:Galderma Laboratories, L.P.Fort Worth, Texas 76177 USAP50742-1 0207
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General: Topical metronidazole has been reported to cause tearing of the eyes. Therefore, contact with the eyes should be avoided. If a reaction suggesting local skin irritation occurs, patients should be directed to use the medication less often or discontinue use. Metronidazole is a nitroimidazole and should be used with care in patients with evidence of, or history of, blood dyscrasia.<br/>Information for Patients: Patients using METROGEL (metronidazole gel), 1% should receive the following information and instructions:<br/>Drug Interactions: Oral metronidazole has been reported to potentiate the anticoagulant effect of coumarin and warfarin, resulting in a prolongation of prothrombin time. Drug interactions should be kept in mind when METROGEL (metronidazole gel), 1% is prescribed for patients who are receiving anticoagulant treatment, although they are less likely to occur with topical metronidazole administration because of low absorption.<br/>Carcinogenesis, Mutagenesis, Impairment of Fertility: Metronidazole has shown evidence of carcinogenic activity in a number of studies involving chronic, oral administration in mice and rats, but not in studies involving hamsters. In several long-term studies in mice, oral doses of approximately 225 mg/m/day or greater (approximately 37 times the human topical dose on a mg/mbasis) were associated with an increase in pulmonary tumors and lymphomas. Several long-term oral studies in the rat have shown statistically significant increases in mammary and hepatic tumors at doses>885 mg/m/day (144 times the human dose). Metronidazole has shown evidence of mutagenic activity in several in vitro bacterial assay systems. In addition, a dose-related increase in the frequency of micronuclei was observed in mice after intraperitoneal injections. An increase in chromosomal aberrations in peripheral blood lymphocytes was reported in patients with Crohn's disease who were treated with 200 tol200 mg/day of metronidazole for 1 to 24 months. However, in another study, no increase in chromosomal aberrations in circulating lymphocytes was observed in patients with Crohn's disease treated with the drug for 8 months. In one published study, using albino hairless mice. intraperitoneal administration of metronidazole at a dose of 45 mg/m/day (approximately 7 times the human topical dose on a mg/mbasis) was associated with an increase in ultraviolet radiation-induced skin carcinogenesis. Neither dermal carcinogenicity nor photocarcinogenicity studies have been performed with METROGEL (metronidazole gel), 1% or any marketed metronidazole formulations.<br/>Pregnancy:<br/>Teratogenic Effects: Pregnancy Category B. There are no adequate and well-controlled studies with the use of METROGEL (metronidazole gel), 1% in pregnant women. Metronidazole crosses the placental barrier and enters the fetal circulation rapidly. No fetotoxicity was observed after oral administration of metronidazole in rats or mice at 200 and 20 times, respectively, the expected clinical dose. However, oral metronidazole has shown carcinogenic activity in rodents. Because animal reproduction studies are not always predictive of human response, METROGEL (metronidazole gel), 1% should be used during pregnancy only if clearly needed.<br/>Nursing Mothers: After oral administration, metronidazole is secreted in breast milk in concentrations similar to those found in the plasma. Even though blood levels taken after topical metronidazole application are significantly lower than those achieved after oral metronidazole, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother and the risk to the infant.<br/>Pediatric Use: Safety and effectiveness in pediatric patients have not been established.<br/>Geriatric Use: While specific clinical trials in the geriatric population have not been conducted, sixty-six patients aged 65 years and older treated with METROGEL (metronidazole gel), 1% over ten weeks showed comparable safety and efficacy as compared to the general study population.
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There are no reported human experiences with overdosage of METROGEL (metronidazole gel), 1%.Topically applied metronidazole can be absorbed in sufficient amount to produce systemic effects.
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metronidazole
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METROGEL (Gel)
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In a controlled clinical trial, 557 patients used METROGEL (metronidazole gel), 1% and 189 patients used the gel vehicle once daily. The following table summarizes adverse reactions that occur at a rate of���1% in the clinical trials: The following table summarizes the highest scores of local cutaneous signs and symptoms of irritation that were worse than baseline: The following additional adverse experiences have been reported with the topical use of metronidazole: skin irritation,transient redness, metallic taste, tingling or numbness of extremities, and nausea.
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METR0GEL' (metronidazole gel), 1% is indicated for the topical treatment of inflammatory lesions of rosacea.
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METROGEL