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Antizol® (fomepizole) Injection is a competitive inhibitor of alcohol dehydrogenase.

The chemical name of fomepizole is 4-methylpyrazole. It has the molecular formula C₄H₆N₂ and a molecular weight of 82.1. The structural formula is:

It is a clear to yellow liquid at room temperature. Its melting point is 25°C (77°F) and it may present in a solid form at room temperature. Fomepizole is soluble in water and very soluble in ethanol, diethyl ether, and chloroform. Each vial contains 1.5 mL (1 g/mL) of fomepizole.

Last reviewed on RxList: 11/6/2008
This monograph has been modified to include the generic and brand name in many instances.