POTENTIATION OF SEDATIVE EFFECT IS SEEN IN COMBINATION WITH TRICYCLIC ANTIDEPRESSANTS, BARBITURATES, OPIOID ANALGESICS, BENZODIAZEPINES AND ANTIPSYCHOTIC DRUGS. WARFARIN PROLONGS ITS EFFECT. DISULFIRAM IF GIVEN ON LONG TERM IN A PATIENT MAY INHIBIT THE METABOLISM & EXCRETION OF CHLORAL HYDRATE.