Drug interactions
Hepatitis A vaccine inactivated + Ponesimod
Severity: Moderate
Hepatitis A vaccine inactivated 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 reduces circulating lymphocytes and may weaken the antibody response to inactivated vaccines such as hepatitis A. Vaccination may therefore be less effective during treatment.
What this interaction means in plain words
Hepatitis A vaccine inactivated 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.
Hepatitis A vaccine inactivated belongs to Anti Virals; Ponesimod belongs to Central Nervous System.
Why it happens
S1P receptor modulation sequesters lymphocytes in lymphoid tissue, blunting vaccine-induced immune responses.
What to do
Where possible, complete vaccination at least 4 weeks before starting ponesimod. If vaccinated during therapy, consider checking antibody response.
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 Hepatitis A vaccine inactivated
- Adalimumab + Hepatitis A vaccine inactivated Moderate
- Alefacept + Hepatitis A vaccine inactivated Moderate
- Anakinra + Hepatitis A vaccine inactivated Moderate
- Anti-thymocyte + Hepatitis A vaccine inactivated Moderate
- Antithymocyte globulin equine + Hepatitis A vaccine inactivated Moderate
- Antithymocyte globulin rabbit + Hepatitis A vaccine inactivated Moderate
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 Hepatitis A vaccine inactivated with Ponesimod?
MediHelp rates the interaction as moderate. Hepatitis A vaccine inactivated 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 reduces circulating lymphocytes and may weaken the antibody response to inactivated vaccines such as hepatitis A. Vaccination may therefore be less effective during treatment.
How serious is the interaction between Hepatitis A vaccine inactivated 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: Where possible, complete vaccination at least 4 weeks before starting ponesimod. If vaccinated during therapy, consider checking antibody response.
What other medicines interact with Hepatitis A vaccine inactivated?
MediHelp also lists interactions of Hepatitis A vaccine inactivated with, for example, Adalimumab, Alefacept, Anakinra. The full list is on the Hepatitis A vaccine inactivated page.
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