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Drug interactions

Denosumab + Mechlorethamine

Severity: Moderate

Denosumab and Mechlorethamine: 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

Mechlorethamine is an alkylating agent that causes myelosuppression and immune suppression when given systemically. Denosumab carries a labeled warning for serious infections in immunocompromised patients, so the infection risk may be additive. Topical mechlorethamine has little systemic exposure.

What this interaction means in plain words

Denosumab and Mechlorethamine 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.

Denosumab belongs to Oncology; Mechlorethamine belongs to Oncology.

Evidence level: Low

Why it happens

Additive infection risk from alkylator-induced myelosuppression and possible immune effects of denosumab.

What to do

Monitor blood counts and watch for infection, especially with systemic mechlorethamine. Treat infections promptly.

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 Denosumab with Mechlorethamine?

MediHelp rates the interaction as moderate. Denosumab and Mechlorethamine 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. Mechlorethamine is an alkylating agent that causes myelosuppression and immune suppression when given systemically. Denosumab carries a labeled warning for serious infections in immunocompromised patients, so the infection risk may be additive. Topical mechlorethamine has little systemic exposure.

How serious is the interaction between Denosumab and Mechlorethamine?

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 blood counts and watch for infection, especially with systemic mechlorethamine. Treat infections promptly.

What other medicines interact with Denosumab?

MediHelp also lists interactions of Denosumab with, for example, Abatacept, Adalimumab, Alefacept. The full list is on the Denosumab page.

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

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

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