Drug interactions
Idelalisib + Liposomal doxorubicin
Severity: Moderate
Idelalisib and Liposomal doxorubicin: 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
Idelalisib is a strong CYP3A4 inhibitor and also inhibits P-gp, so it may increase doxorubicin exposure. This could worsen myelosuppression and cardiotoxicity, and idelalisib itself carries risks of infection and neutropenia.
What this interaction means in plain words
Idelalisib and Liposomal doxorubicin 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.
Idelalisib belongs to Oncology; Liposomal doxorubicin belongs to Oncology.
Why it happens
Idelalisib inhibits CYP3A4 and P-gp, reducing doxorubicin clearance.
What to do
Monitor blood counts and cardiac function closely and reduce the doxorubicin dose if toxicity develops.
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?
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Other interactions of Liposomal doxorubicin
- Dengue vaccine + Liposomal doxorubicin Contraindicated
- Belatacept + Liposomal doxorubicin Major
- Cyclosporine + Liposomal doxorubicin Major
- Dronedarone + Liposomal doxorubicin Major
- Elvitegravir / cobicistat / emtricitabine / tenofovir df + Liposomal doxorubicin Major
- Fingolimod + Liposomal doxorubicin Major
Other interactions of Idelalisib
- Alfuzosin + Idelalisib Contraindicated
- Cisapride + Idelalisib Contraindicated
- Dihydroergotamine + Idelalisib Contraindicated
- Dronedarone + Idelalisib Contraindicated
- Eletriptan + Idelalisib Contraindicated
- Eplerenone + Idelalisib Contraindicated
Frequently asked questions
Can I take Idelalisib with Liposomal doxorubicin?
MediHelp rates the interaction as moderate. Idelalisib and Liposomal doxorubicin 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. Idelalisib is a strong CYP3A4 inhibitor and also inhibits P-gp, so it may increase doxorubicin exposure. This could worsen myelosuppression and cardiotoxicity, and idelalisib itself carries risks of infection and neutropenia.
How serious is the interaction between Idelalisib and Liposomal doxorubicin?
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 cardiac function closely and reduce the doxorubicin dose if toxicity develops.
What other medicines interact with Liposomal doxorubicin?
MediHelp also lists interactions of Liposomal doxorubicin with, for example, Dengue vaccine, Belatacept, Cyclosporine. The full list is on the Liposomal doxorubicin page.
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