Serotonin syndrome w/ non-selective MAOIs; reversible, selective MAOI-A eg, moclobemide; irreversible MAOI-B eg, selegiline; serotonergic drugs eg, tramadol, sumatriptan, other triptans. Lowered seizure threshold w/ TCAs, SSRIs, neuroleptics (eg, phenothiazine, thioxanthenes, butyrophenones), mefloquine, bupropion, tramadol. Enhanced effects w/ lithium, tryptophan. Increased AR incidence w/ St. John's wort. Altered anticoagulant effects w/ oral anticoagulants. Increased bleeding tendency w/ NSAIDs. Increased plasma conc w/ omeprazole, cimetidine. Increased plasma levels of desipramine, metoprolol. Concomitant use w/ fluoxetine, fluvoxamine, lansoprazole, ticlopidine, flecainide, propafenone, clomipramine, nortriptyline, antipsychotics, CYP2C19-metabolized drugs, alcohol.