Carbidopa and levodopa and Tranylcypromine interaction
Carbidopa and levodopa and Tranylcypromine: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Carbidopa and levodopa (Duopa) label · effective 2026-03-19
DUOPA is contraindicated in patients who are currently taking a nonselective monoamine oxidase (MAO) inhibitor (e.g., phenelzine and tranylcypromine) or have recently (within 2 weeks) taken a nonselective MAO inhibitor.
DUOPA is contraindicated in patients taking nonselective monoamine oxidase (MAO) inhibitors ( 4 )
Monoamine Oxidase (MAO) Inhibitors The use of nonselective MAO inhibitors with DUOPA is contraindicated [see Contraindications ( 4 ) ] .
Discontinue use of any nonselective MAO inhibitors at least two weeks prior to initiating DUOPA.
From the Tranylcypromine (Tranylcypromine Sulfate) label · effective 2025-07-25
…sympathomimetic herbal medicines or dietary supplements antihistamines (allergy medicines) triptans buspirone carbamazepine dextromethorphan dopamine hydroxytryptophan and tryptophan levodopa and methyldopa meperidine rasagline resperine s-adenosyl-L-methionine (SAM-e) tapentadol tetrabenazin Ask your healthcare provider or pharmacist if you are not sure if you…
…such as pseudoephedrine, phenylephrine, and ephedrine; or dietary supplements that contain sympathomimetics) Triptans Individual Drugs (not included in the above classes) buspirone levodopa s-adenosyl-L-methionine (SAM-e) carbamazepine meperidine tapentadol cyclobenzaprine methyldopa tetrabenazine dextromethorphan milnacipran tryptophan dopamine rasagiline hydroxytryptophan…
…Contraindicated a HR Droperidol Use with caution d QT interval prolongation Entacapone Use with caution d HR Fentanyl Use with caution d SS Hydroxytryptophan Contraindicated a SS Levodopa Contraindicated a HR Lithium Use with caution d SS Meperidine Contraindicated a SS Methadone Use with caution d SS Methyldopa Contraindicated a HR Metoclopramide Use with caution…
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Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.