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NCI Drug Dictionary

  

diltiazem hydrochloride 
A benzothiazepine calcium channel blocking agent. Diltiazem hydrochloride inhibits the transmembrane influx of extracellular calcium ions into select myocardial and vascular smooth muscle cells, causing dilatation of coronary and systemic arteries and decreasing myocardial contractility. Because of its vasodilatory activity, this agent has been shown to improve the microcirculation in some tumors, thereby potentially improving the delivery of antineoplastic agents to tumor cells. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
Synonym:diltiazem HCl
US brand name:Cardizem