MAOIs (eg, phenelzine & moclobemide); linezolid; methylene blue; thioridazine; ciprofloxacin or enoxacin; antidepressants [eg, SSRIs or SNRIs (ie, fluoxetine, venlafaxine, & paroxetine), TCAs (ie, amitriptyline & desipramine), potent CYP1A2 inhibitors (ie, fluvoxamine)]; antipsychotics (eg, olanzapine & risperidone); lithium; oral anticoagulants (eg, warfarin & dabigatran), acetylsalicylic acid, NSAIDs (eg, ibuprofen & naproxen); anti-arrhythmics (eg, flecainide & encainide); medications affecting serotonin (eg, lithium, medications containing tryptophan, St. John's wort, triptans ie, sumatriptan & rizatriptan); opioids (eg, fentanyl, tramadol, tapentadol, mepiridine, methadone & pentazocine); dextromethorphan. Limit alcohol intake while taking duloxetine.