Concomitant use is contraindicated w/ non-selective MAOIs, selective-A & B MAOIs; not recommend w/ alcohol, carbamazepine & other enzyme inducers, opioid agonists-antagonists; needs consideration w/ selective serotonin re-uptake inhibitors, triptans, other opioid derivatives & anxiolytics, barbiturates, benzodiazepines, hypnotics, sedative antidepressants & antihistamines, neuroleptics, centrally-acting antihypertensives, TCAs, thalidomide, baclofen, warfarin-like compd, ketoconazole, erythromycin, bupropion, ondansetron.