Drug interactions
Temsirolimus + Voriconazole
Severity: Major
Temsirolimus and Voriconazole: major 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
Voriconazole inhibits CYP3A4 and may raise concentrations of temsirolimus and its active metabolite sirolimus. This can increase toxicities such as myelosuppression, mucositis, hyperglycemia and infections.
What this interaction means in plain words
Temsirolimus and Voriconazole can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Temsirolimus belongs to Oncology; Voriconazole belongs to Anti Fungals.
Why it happens
CYP3A4 inhibition by voriconazole decreases temsirolimus and sirolimus metabolism.
What to do
Prefer an alternative antifungal or a non-inhibiting agent; if co-administered, consider reducing the temsirolimus dose and monitor blood counts, glucose and lipids.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Voriconazole
- Avanafil + Voriconazole Contraindicated
- Butabarbital + Voriconazole Contraindicated
- Carbamazepine + Voriconazole Contraindicated
- Conivaptan + Voriconazole Contraindicated
- Dihydroergotamine intranasal + Voriconazole Contraindicated
- Dihydroergotamine + Voriconazole Contraindicated
Other interactions of Temsirolimus
- Bcg vaccine live + Temsirolimus Contraindicated
- Influenza virus vaccine quadrivalent intranasal + Temsirolimus Contraindicated
- Measles mumps and rubella vaccine live + Temsirolimus Contraindicated
- Measles mumps rubella and varicella vaccine live + Temsirolimus Contraindicated
- Measles vaccine + Temsirolimus Contraindicated
- Rotavirus oral vaccine live + Temsirolimus Contraindicated
Frequently asked questions
Can I take Temsirolimus with Voriconazole?
MediHelp rates the interaction as major. Temsirolimus and Voriconazole can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Voriconazole inhibits CYP3A4 and may raise concentrations of temsirolimus and its active metabolite sirolimus. This can increase toxicities such as myelosuppression, mucositis, hyperglycemia and infections.
How serious is the interaction between Temsirolimus and Voriconazole?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Prefer an alternative antifungal or a non-inhibiting agent; if co-administered, consider reducing the temsirolimus dose and monitor blood counts, glucose and lipids.
What other medicines interact with Voriconazole?
MediHelp also lists interactions of Voriconazole with, for example, Avanafil, Butabarbital, Carbamazepine. The full list is on the Voriconazole page.
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