Verapamil

Source:http://linkedlifedata.com/resource/umls/id/C0042523

MSH: A calcium channel blocker that is a class IV anti-arrhythmia agent.,CSP: calcium channel blocker that dilates coronary arteries and decreases myocardial oxygen demand.,PDQ: A phenylalkylamine calcium channel blocking agent. Verapamil inhibits the transmembrane influx of extracellular calcium ions into myocardial and vascular smooth muscle cells, causing dilatation of the main coronary and systemic arteries and decreasing myocardial contractility. This agent also inhibits the drug efflux pump P-glycoprotein which is overexpressed in some multi-drug resistant tumors and may improve the efficacy of some antineoplastic agents. Check for "http://www.cancer.gov/Search/ClinicalTrialsLink.aspx?id=39730&idtype=1" active clinical trials or "http://www.cancer.gov/Search/ClinicalTrialsLink.aspx?id=39730&idtype=1&closed=1" closed clinical trials using this agent. ("http://nciterms.nci.nih.gov:80/NCIBrowser/ConceptReport.jsp?dictionary=NCI_Thesaurus&code=C928" NCI Thesaurus),NCI: A phenylalkylamine calcium channel blo

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