Drug interactions
Diltiazem + Stiripentol
Severity: Moderate
Diltiazem and Stiripentol: 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
Stiripentol can both inhibit and induce CYP3A4, so diltiazem exposure may change unpredictably. Clinical effects could range from reduced efficacy to excess bradycardia or hypotension.
What this interaction means in plain words
Diltiazem and Stiripentol 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.
Diltiazem belongs to Cardiovascular; Stiripentol belongs to Central Nervous System.
Why it happens
Mixed inhibition and induction of CYP3A4 by stiripentol alters diltiazem metabolism.
What to do
Monitor heart rate, blood pressure and clinical response when starting or stopping stiripentol, and adjust the diltiazem dose accordingly.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Diltiazem and Stiripentol, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Diltiazem
- Diltiazem + Flibanserin Contraindicated
- Diltiazem + Ivabradine Contraindicated
- Diltiazem + Lomitapide Contraindicated
- Diltiazem + Lonafarnib Contraindicated
- Acebutolol + Diltiazem Major
- Alfentanil + Diltiazem Major
Other interactions of Stiripentol
Frequently asked questions
Can I take Diltiazem with Stiripentol?
MediHelp rates the interaction as moderate. Diltiazem and Stiripentol 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. Stiripentol can both inhibit and induce CYP3A4, so diltiazem exposure may change unpredictably. Clinical effects could range from reduced efficacy to excess bradycardia or hypotension.
How serious is the interaction between Diltiazem and Stiripentol?
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 heart rate, blood pressure and clinical response when starting or stopping stiripentol, and adjust the diltiazem dose accordingly.
What other medicines interact with Diltiazem?
MediHelp also lists interactions of Diltiazem with, for example, Flibanserin, Ivabradine, Lomitapide. The full list is on the Diltiazem 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.
