Drug interactions
Labetalol + Ponesimod
Severity: Moderate
Labetalol and Ponesimod: 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
Ponesimod lowers heart rate and slows atrioventricular conduction when treatment is started. Combined with a beta-blocker such as labetalol, bradycardia and conduction delay may be more pronounced.
What this interaction means in plain words
Labetalol and Ponesimod 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.
Labetalol belongs to Cardiovascular; Ponesimod belongs to Central Nervous System.
Why it happens
Additive negative chronotropic and dromotropic effects from S1P receptor modulation and beta-adrenergic blockade.
What to do
Check resting heart rate and ECG before starting ponesimod in patients on a stable beta-blocker dose, and follow the labeled titration. Monitor heart rate and watch for symptomatic bradycardia during initiation.
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 Labetalol
- Amifostine + Labetalol Major
- Amiodarone + Labetalol Major
- Atenolol-chlorthalidone + Labetalol Major
- Atenolol + Labetalol Major
- Betaxolol + Labetalol Major
- Bisoprolol + Labetalol Major
Other interactions of Ponesimod
- Fingolimod + Ponesimod Contraindicated
- Ponesimod + Siponimod Contraindicated
- Amiodarone + Ponesimod Major
- Amisulpride + Ponesimod Major
- Anagrelide + Ponesimod Major
- Anti-thymocyte + Ponesimod Major
Frequently asked questions
Can I take Labetalol with Ponesimod?
MediHelp rates the interaction as moderate. Labetalol and Ponesimod 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. Ponesimod lowers heart rate and slows atrioventricular conduction when treatment is started. Combined with a beta-blocker such as labetalol, bradycardia and conduction delay may be more pronounced.
How serious is the interaction between Labetalol and Ponesimod?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check resting heart rate and ECG before starting ponesimod in patients on a stable beta-blocker dose, and follow the labeled titration. Monitor heart rate and watch for symptomatic bradycardia during initiation.
What other medicines interact with Labetalol?
MediHelp also lists interactions of Labetalol with, for example, Amifostine, Amiodarone, Atenolol-chlorthalidone. The full list is on the Labetalol page.
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