The effect of carbidine on enzymes of ethanol and acetaldehyde oxidation, the rate of ethanol elimination and the parameters of ethanol consumption were studied during long-term alcoholic intoxication. Carbidine administration was shown to increase the activity of alcohol dehydrogenase of the liver tissue, to decrease the activity of aldehyde dehydrogenase with a low Km to acetaldehyde. Also, the rate of ethanol elimination and a relative amount of consumed ethanol increase at the expense of an increase of the volume of consumed liquid.