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Interactions médicamenteuses

Etrasimod + Interferon beta 1a

Gravité: Majeure

Etrasimod and Interferon beta 1a: major interaction.

Dernière mise à jour

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Résumé

Etrasimod lowers circulating lymphocyte counts and interferon beta can also affect immune function and cause leukopenia. Combining them could add to immune suppression and raise the risk of infection, and this combination has not been studied. The effect of etrasimod on lymphocytes persists for some weeks after the last dose.

Ce que signifie cette interaction, en termes simples

Etrasimod and Interferon beta 1a 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 belongs to Gastrointestinal Tract; Interferon beta 1a belongs to Central Nervous System.

Niveau de preuve: Low

Pourquoi elle survient

Additive immunomodulatory effects: etrasimod sequesters lymphocytes via S1P receptor modulation while interferon beta alters immune function and may reduce blood counts.

Conduite à tenir

Avoid combining these agents, including during the weeks after etrasimod is stopped. If used, monitor the complete blood count and watch closely for signs of infection.

Questions à poser à votre pharmacien

  • 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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Questions fréquentes

Can I take Etrasimod with Interferon beta 1a?

MediHelp rates the interaction as major. Etrasimod and Interferon beta 1a 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 lowers circulating lymphocyte counts and interferon beta can also affect immune function and cause leukopenia. Combining them could add to immune suppression and raise the risk of infection, and this combination has not been studied. The effect of etrasimod on lymphocytes persists for some weeks after the last dose.

How serious is the interaction between Etrasimod and Interferon beta 1a?

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 combining these agents, including during the weeks after etrasimod is stopped. If used, monitor the complete blood count and watch closely for signs of infection.

What other medicines interact with Interferon beta 1a?

MediHelp also lists interactions of Interferon beta 1a with, for example, Deferiprone, Hydroxyurea, Idecabtagene vicleucel. The full list is on the Interferon beta 1a page.

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