Background/Aims:Limited systematic data exists on the incidence of drug-induced hepatotoxicity due to disulfiram and the most important prognostic markers.We aimed to determine the nature and frequency of suspected disulfiram hepatotoxicity in Sweden.Methods:All reports of suspected hepatic adverse drug reactions(ADR)associated with disulfiram received by the Swedish Adverse Drug Reactions Advisory Committee(SADRAC)1966-2002 were reviewed.Causality assessment was based on the International Consensus Criteria.Results:A total of 82 reports of disulfiram suspected ADRs had at least a possible causal relationship.Eight patients died or underwent liver transplantation(Tx).Mortality or Tx was 16%in patients with jaundice.The median age of the patients(65%males)was 45 years with a median duration of treatment of 42 days.Bilirubin was higher(P < 0.0001)in the deceased/transplanted patients compared to surviving patients.No difference was observed in age or duration of therapy between deceased and transplanted and those who recovered.Eosinophilic infiltration in liver biopsies was associated with a favourable outcome,hepatocyte drop-out with a poor outcome.Conclusions:Disulfiram associated hepatitis has a considerable mortality risk.Histological signs of immunoallergy seem to be common.Bilirubin and hepatocyte drop-out were the only predictors for death or transplantation. Background / Aims: Limited systematic data exists on the incidence of drug-induced hepatotoxicity due to disulfiram and the most important prognostic markers. We intended to determine the nature and frequency of suspected disulfiram hepatotoxicity in Sweden. Methods: All reports of suspected hepatic adverse drug reactions (ADR) associated with disulfiram received by the Swedish Adverse Drug Reactions Advisory Committee (SADRAC) 1966-2002 were reviewed. Causality assessment was based on the International Consensus Criteria. Results: A total of 82 reports of disulfiramzed ADRs had at least a Possible causal relationship. Eight patients died or underwent liver transplantation (Tx). Moodality or Tx was 16% in patients with jaundice. median age of the patients (65% males) was 45 years with a median duration of treatment of 42 days. Bilirubin was higher (P <0.0001) in the deceased / transplanted patients compared to surviving patients. No difference was observed in age or duration of therapy between deceased and transplanted and those who had recovered. Eosinophilic infiltration in liver biopsies was associated with a favourable outcome, hepatocyte drop-out with a poor outcome. Confc: Disulfiram associated hepatitis has a considerable mortality risk. Histological signs of immunoallergy seem to be common. hepatocyte drop-out were the only predictors for death or transplantation.