Drug interactions
Carbidopa-levodopa + Macimorelin
Severity: Moderate
Carbidopa-levodopa and Macimorelin: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Levodopa can stimulate growth hormone release and may alter the result of the macimorelin growth hormone stimulation test, risking a false interpretation. This is a diagnostic interference rather than a toxicity.
What this interaction means in plain words
Carbidopa-levodopa and Macimorelin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Carbidopa-levodopa belongs to Central Nervous System; Macimorelin belongs to Endocrine.
Why it happens
Levodopa transiently raises growth hormone secretion, which can confound macimorelin test results.
What to do
Where the patient can safely do so, withhold levodopa for an adequate washout period before macimorelin testing, as advised in labeling. Otherwise interpret test results cautiously or use an alternative test.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Carbidopa-levodopa
- Carbidopa-levodopa + Isocarboxazid Contraindicated
- Carbidopa-levodopa + Phenelzine Contraindicated
- Carbidopa-levodopa + Selegiline transdermal Contraindicated
- Carbidopa-levodopa + Tranylcypromine Contraindicated
- Amisulpride + Carbidopa-levodopa Major
- Asenapine + Carbidopa-levodopa Major
Other interactions of Macimorelin
Frequently asked questions
Can I take Carbidopa-levodopa with Macimorelin?
MediHelp rates the interaction as moderate. Carbidopa-levodopa and Macimorelin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Levodopa can stimulate growth hormone release and may alter the result of the macimorelin growth hormone stimulation test, risking a false interpretation. This is a diagnostic interference rather than a toxicity.
How serious is the interaction between Carbidopa-levodopa and Macimorelin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Where the patient can safely do so, withhold levodopa for an adequate washout period before macimorelin testing, as advised in labeling. Otherwise interpret test results cautiously or use an alternative test.
What other medicines interact with Carbidopa-levodopa?
MediHelp also lists interactions of Carbidopa-levodopa with, for example, Isocarboxazid, Phenelzine, Selegiline transdermal. The full list is on the Carbidopa-levodopa page.
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