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Drug interactions

Dabrafenib + Temsirolimus

Severity: Moderate

Dabrafenib and Temsirolimus: 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

Dabrafenib induces CYP3A4 and may lower concentrations of temsirolimus and its active metabolite sirolimus. This could reduce antitumor efficacy.

What this interaction means in plain words

Dabrafenib and Temsirolimus 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.

Dabrafenib belongs to Oncology; Temsirolimus belongs to Oncology.

Evidence level: Moderate

Why it happens

Dabrafenib induces CYP3A4, increasing the metabolic clearance of temsirolimus and sirolimus.

What to do

Monitor for reduced tumor response and consider an alternative therapy where feasible. Dose adjustment of temsirolimus may be needed if coadministration continues.

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 Dabrafenib with Temsirolimus?

MediHelp rates the interaction as moderate. Dabrafenib and Temsirolimus 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. Dabrafenib induces CYP3A4 and may lower concentrations of temsirolimus and its active metabolite sirolimus. This could reduce antitumor efficacy.

How serious is the interaction between Dabrafenib and Temsirolimus?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for reduced tumor response and consider an alternative therapy where feasible. Dose adjustment of temsirolimus may be needed if coadministration continues.

What other medicines interact with Temsirolimus?

MediHelp also lists interactions of Temsirolimus with, for example, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal, Measles mumps and rubella vaccine live. The full list is on the Temsirolimus page.

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

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