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Drug interactions

Tepotinib + Testosterone

Severity: Minor

Tepotinib and Testosterone: minor 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

Tepotinib inhibits intestinal and possibly systemic P-glycoprotein, and testosterone is a P-gp substrate. Exposure to testosterone could therefore rise, but the clinical consequence is poorly characterised and likely modest.

What this interaction means in plain words

Tepotinib and Testosterone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Tepotinib belongs to Oncology; Testosterone belongs to Endocrine.

Evidence level: Low

Why it happens

Inhibition of P-glycoprotein efflux transport by tepotinib may raise testosterone absorption and exposure.

What to do

No dose change is normally needed; monitor for androgenic adverse effects such as erythrocytosis or fluid retention and check serum testosterone if symptoms occur.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

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 Tepotinib with Testosterone?

MediHelp rates the interaction as minor. Tepotinib and Testosterone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Tepotinib inhibits intestinal and possibly systemic P-glycoprotein, and testosterone is a P-gp substrate. Exposure to testosterone could therefore rise, but the clinical consequence is poorly characterised and likely modest.

How serious is the interaction between Tepotinib and Testosterone?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose change is normally needed; monitor for androgenic adverse effects such as erythrocytosis or fluid retention and check serum testosterone if symptoms occur.

What other medicines interact with Testosterone?

MediHelp also lists interactions of Testosterone with, for example, Warfarin, Androstenedione, Betamethasone. The full list is on the Testosterone page.

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