NCI Drug Dictionary

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The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

warfarin sodium
The sodium salt form of warfarin, a coumarin and a vitamin K antagonist, with anticoagulant activity. Warfarin sodium inhibits both vitamin K and vitamin K epoxide reductases, thereby interfering with the cyclic interconversion of vitamin K epoxide to its reduced form, vitamin KH2. Vitamin KH2 is a cofactor for the carboxylation of glutamate residues on the N-terminal regions of vitamin K-dependent proteins. As a result, maturation of vitamin K-dependent coagulation factors II, VII, IX, and X and anticoagulant proteins C and S is inhibited. Without these coagulation factors, thrombogenesis and blood clot formation are prevented. Check for active clinical trials using this agent. (NCI Thesaurus)

US brand name:Coumadin
Foreign brand name:Marevan