Drug interactions
Asenapine + Etrasimod
Severity: Major
Asenapine and Etrasimod: 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
Etrasimod can slow heart rate and AV conduction at initiation, and asenapine can prolong the QT interval. Together, bradycardia may raise the risk of torsades de pointes.
What this interaction means in plain words
Asenapine and Etrasimod 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.
Asenapine belongs to Central Nervous System; Etrasimod belongs to Gastrointestinal Tract.
Why it happens
Bradycardia from S1P receptor modulation combined with QT prolongation by asenapine.
What to do
Obtain a baseline ECG and consider cardiology advice before starting etrasimod in patients on QT-prolonging drugs. Monitor heart rate and ECG and correct electrolyte abnormalities.
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 Asenapine
- Asenapine + Pimozide Contraindicated
- Asenapine + Thioridazine Contraindicated
- Asenapine + Vandetanib Contraindicated
- Adagrasib + Asenapine Major
- Alfentanil + Asenapine Major
- Alfuzosin + Asenapine Major
Other interactions of Etrasimod
- Abatacept + Etrasimod Major
- Amiodarone + Etrasimod Major
- Anagrelide + Etrasimod Major
- Anakinra + Etrasimod Major
- Anti-thymocyte + Etrasimod Major
- Baricitinib + Etrasimod Major
Frequently asked questions
Can I take Asenapine with Etrasimod?
MediHelp rates the interaction as major. Asenapine and Etrasimod 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. Etrasimod can slow heart rate and AV conduction at initiation, and asenapine can prolong the QT interval. Together, bradycardia may raise the risk of torsades de pointes.
How serious is the interaction between Asenapine and Etrasimod?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and consider cardiology advice before starting etrasimod in patients on QT-prolonging drugs. Monitor heart rate and ECG and correct electrolyte abnormalities.
What other medicines interact with Asenapine?
MediHelp also lists interactions of Asenapine with, for example, Pimozide, Thioridazine, Vandetanib. The full list is on the Asenapine page.
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