Increased risk of serotonin syndrome w/ SSRIs, TCAs, triptans, fentanyl, lithium, tramadol. May reduce plasma levels w/ barbiturates, rifampicin and other anticonvulsants. May increase plasma levels w/ methylphenidate, cimetidine, antipsychotics, Ca channel blockers. May precipitate cardiac arrhythmias w/ thyroid hormones. May reduce antihypertensive effects of debrisoquine, guanethidine and clonidine. May increase pressor effect of epinephrine and norepinephrine. May increase the risk of ventricular arrhythmias w/ antiarrhythmics (e.g. amiodarone or quinidine), antihistamines astemizole, terfenadine, some antipsychotics (pimozide, sertindole, and thioridazine), sotalol, cisapride and halofantrine.
Potentially Fatal: Increased risk of serotonin syndrome w/ MAOIs, linezolid and methylene blue.