the alcohol while still in the stomach is oxidized to acetaldehyde by the ingestion of an extraneous source of the enzyme alcohol dehydrogenase ingestion of the enzyme alcohol dehydrogenase in accordance with the present invention may be before or concomitantly with the consumption of the alcoholic beverage continued drinking requires the periodic ingestion of additional alcohol dehydrogenase during the drinking period the amount of alcohol dehydrogenase which should be ingested to reduce the blood alcohol level to an acceptable level depends on several factors generally the alcohol dehydrogenase is ingested in the amount of 0 5 to 10 grams of active dry bakers brewers distillers or vintners yeast the amount needed is determined by the six factors listed above and the idiosyncratic behavior of different people to alcohol while the alcohol dehydrogenase may be ingested for example as a suspension in a liquid or paste the most convenient and effective way to administer the alcohol dehydrogenase is by means of dose controlled tablets capsules or caplets containing active dry bakers brewers vintners or distillers yeast the advantage of ingesting the alcohol dehydrogenase in this manner is that it permits the drinker to self dose during the imbibition period since the ingested alcohol dehydrogenase does not long survive.