The course of alcoholic psychoses was juxtaposed to that of alcoholic beverages purchase in Moscow during 1984-1986. Antialcoholic measures since June, 1985, sharply decreased the number of psychoses to 33.1% of the 1984 level. Their distribution within a month has changed. The alcoholic beverages purchase in 1986 was 61.7% of that in 1984. The number of alcoholic psychoses displayed a strong correlation with the purchase level (r = +0.90). Regression analysis showed that beverages purchase reduction to 28% of the 1984 level would fully abolish the alcoholic psychoses in Moscow. The conclusion was that the alcoholic psychoses can serve as a reliable index of the effectiveness of anti-alcoholic measures.