Enhanced sedative effects w/ alcohol. Additive CNS depressant effects w/ antipsychotics (neuroleptics), hypnotics, anxiolytics/sedatives, antidepressant agents, narcotic analgesics, anti-epileptic drugs, anaesth & sedative antihistamines. Caution w/ CYP3A inhibitors eg, nefazodone, fluvoxamine & cimetidine; fluoxetine, propoxyphene, OCs, sertraline, diltiazem, or macrolide antibiotics eg, erythromycin & troleandomycin. Not recommended w/ ketoconazole, itraconazole, or other azole-type antifungals. Prolonged elimination t
½ & enhanced clinical effects w/ HIV PIs (eg, ritonavir).