An enzyme created by the liver that helps the body metabolize (break down) alcohol. See metabolism.

The enzyme found mainly in the liver and stomach that breaks down (metabolizes) alcohol.

An enzyme found in the liver and stomach that helps break down alcohol into substances that can be excreted from the body. Specifically, ADH converts alcohol into acetaldehyde, which is then converted to carbon dioxide and water.

Alcohol dehydrogenases are a group of dehydrogenase enzymes that occur in many organisms and facilitate the interconversion between alcohols and aldehydes or ketones. In humans and many other animals, they serve to break down alcohols which could otherwise be toxic; in yeast and many bacteria, some alcohol dehydrogenases catalyze the opposite reaction as part of fermentation.