Drug interactions
Idelalisib + Nimodipine
Severity: Major
Idelalisib and Nimodipine: 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
Idelalisib is a strong CYP3A inhibitor, and nimodipine is highly dependent on CYP3A4 for clearance. Nimodipine concentrations can rise substantially, risking marked hypotension and bradycardia.
What this interaction means in plain words
Idelalisib and Nimodipine 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.
Idelalisib belongs to Oncology; Nimodipine belongs to Cardiovascular.
Why it happens
Idelalisib inhibits CYP3A4, reducing nimodipine first-pass and systemic metabolism.
What to do
Avoid the combination. If unavoidable, monitor blood pressure and heart rate closely and reduce the nimodipine dose.
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 Nimodipine
- Apalutamide + Nimodipine Major
- Carbamazepine + Nimodipine Major
- Ceritinib + Nimodipine Major
- Clarithromycin + Nimodipine Major
- Cobicistat + Nimodipine Major
- Darunavir + Nimodipine 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 Nimodipine?
MediHelp rates the interaction as major. Idelalisib and Nimodipine 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. Idelalisib is a strong CYP3A inhibitor, and nimodipine is highly dependent on CYP3A4 for clearance. Nimodipine concentrations can rise substantially, risking marked hypotension and bradycardia.
How serious is the interaction between Idelalisib and Nimodipine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination. If unavoidable, monitor blood pressure and heart rate closely and reduce the nimodipine dose.
What other medicines interact with Nimodipine?
MediHelp also lists interactions of Nimodipine with, for example, Apalutamide, Carbamazepine, Ceritinib. The full list is on the Nimodipine page.
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