Alcohol, antipsychotics, hypnotics, anxiolytics/sedatives, antidepressants, narcotic analgesics, antiepileptic drugs, anesth & sedative antihistamines. CYP3A isoenzyme inhibitors. Fluoxetine, propoxyphene, OC, sertraline, diltiazem, or macrolides, ritonavir. Not recommended w/ azole-type antifungals.