Increased plasma conc of triptans eg, sumatriptan, rizatriptan, zolmitriptan, almotriptan, naratriptan, frovatriptan, eletriptan; PPIs (eg, omeprazole), fluoxetine, fluvoxamine; trimipramine, maprotiline. Potentiated effects of opiates. Serotonin syndrome w/ opioids/opiate products eg, buprenorphine, buprenorphine-containing products; pethidine. Intensified & prolonged action of sympathomimetic agents. Increased CNS serotonin serum conc w/ St. John's wort products. Increased effects w/ sibutramine. Potentiated effects of dextropropoxyphene. Not to be co-administered w/ selegiline, linezolid, tramadol, dextromethorphan. Dose adjustment w/ morphine, fentanyl, codeine; cimetidine. Minor potentiated pressor effect w/ tyramine. Caution w/ antidepressants eg, venlafaxine, clomipramine, citalopram, escitalopram, paroxetine, sertraline, bupropion; TCAs, other antidepressants.