The disulfiram-alcohol reaction: factors determining and potential tests predicting severity.

13 ambulatory alcoholics (3 women, 10 men) who consented to alcohol-aversive treatment with disulfiram were subjected to detailed investigations before, during, and after the disulfiram-alcohol reaction (DAR). The studies included quantitative estimation of liver function (aminopyrine breath test, ABT; galactose elimination capacity, GEC) prior to the DAR, measurement of alcohol and acetaldehyde plasma levels together with pulse rate and blood pressure during the DAR, and the effects of disulfiram on erythrocyte acetaldehyde-oxidizing capacity (AOC). As expected, the severity of the DAR showed considerable interindividual variation. However, the maximal fall in diastolic blood pressure was closely (r = 0.83; p less than 0.001; n = 13) related to peak acetaldehyde plasma level (AAPL). The decrease in systolic blood pressure was age dependent, individuals greater than 40 years exhibiting a larger drop for a given AAPL. The dependence of acetaldehyde formation on liver function was suggested by a significant correlation (r = 0.88; p less than 0.01; n = 8) between ABT and AAPL; this relationship was influenced by the prior intake of enzyme-inducing drugs. Measurements of AOC indicated that a disulfiram-induced maximal suppression is achieved already after 6 days of treatment reaching levels of 0.7 +/- 0.6 nmol/ml/min (SD) (compared to pretreatment values of 4.1 +/- 0.9). Mean values in untreated alcoholics and in subjects with alcoholic or nonalcoholic liver disease were not significantly different from controls.(ABSTRACT TRUNCATED AT 250 WORDS)