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Drug interactions

Macimorelin + Somatropin

Severity: Moderate

Macimorelin and Somatropin: 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

Somatropin may interfere with the growth hormone response to macimorelin and compromise the accuracy of the diagnostic test. This could lead to a false interpretation of growth hormone status.

What this interaction means in plain words

Macimorelin and Somatropin 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 belongs to Endocrine; Somatropin belongs to Endocrine.

Evidence level: Moderate

Why it happens

Exogenous growth hormone alters endogenous GH axis feedback, blunting the stimulated GH response measured in the test.

What to do

Stop somatropin at least one week before macimorelin testing. Interpret results cautiously if this washout was not achieved.

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 Macimorelin with Somatropin?

MediHelp rates the interaction as moderate. Macimorelin and Somatropin 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. Somatropin may interfere with the growth hormone response to macimorelin and compromise the accuracy of the diagnostic test. This could lead to a false interpretation of growth hormone status.

How serious is the interaction between Macimorelin and Somatropin?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Stop somatropin at least one week before macimorelin testing. Interpret results cautiously if this washout was not achieved.

What other medicines interact with Somatropin?

MediHelp also lists interactions of Somatropin with, for example, Acarbose, Albiglutide, Alogliptin-metformin. The full list is on the Somatropin page.

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

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