What Happens When You Drink Alcohol? After drinking something with alcohol in it, the liver is the main organ doing the work. The enzyme alcohol dehydrogenase (ADH) metabolizes the ethanol (the type of alcohol found in alcoholic beverages) into acetaldehyde, which is toxic to our bodies. Then the liver enzyme aldehyde dehydrogenase (ALDH) metabolizes acetaldehyde … Continue reading All About Alcohol