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Drug interactions

Atropine + Macimorelin

Severity: Moderate

Atropine 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

Macimorelin is used to diagnose growth hormone deficiency, and drugs that change growth hormone release can distort the result. The labeling for macimorelin lists anticholinergics as agents that may blunt the response, which could lead to a false-positive diagnosis.

What this interaction means in plain words

Atropine 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.

Atropine belongs to Miscellaneous; Macimorelin belongs to Endocrine.

Evidence level: Low

Why it happens

Pharmacodynamic interference with growth hormone release; the exact mechanism is not well established.

What to do

Hold atropine before macimorelin testing for an adequate washout if clinically feasible. Interpret the test with caution if it cannot be stopped.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Atropine with Macimorelin?

MediHelp rates the interaction as moderate. Atropine 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. Macimorelin is used to diagnose growth hormone deficiency, and drugs that change growth hormone release can distort the result. The labeling for macimorelin lists anticholinergics as agents that may blunt the response, which could lead to a false-positive diagnosis.

How serious is the interaction between Atropine 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: Hold atropine before macimorelin testing for an adequate washout if clinically feasible. Interpret the test with caution if it cannot be stopped.

What other medicines interact with Atropine?

MediHelp also lists interactions of Atropine with, for example, Eluxadoline, Henbane, Pramlintide. The full list is on the Atropine page.

Full monographs, dosing and an interaction checker in the MediHelp app

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