Isocarboxazid and Dextromethorphan
Desk tier: Avoid together
Mechanism: MAOI × serotonergic (serotonin syndrome / hypertensive crisis)
“Marplan (isocarboxazid) should not be administered in combination with any of the following: … dextromethorphan”
All pairs for Isocarboxazid · Dextromethorphan
Educational reference only. Not FDA-cleared. The Prescribing Information governs.