Drug interactions
Ponesimod + Temozolomide
Severity: Moderate
Ponesimod and Temozolomide: 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 circulating lymphocytes by sequestering them in lymphoid tissue, while temozolomide causes lymphopenia and myelosuppression. Combined use may increase the risk of infection, including opportunistic infection.
What this interaction means in plain words
Ponesimod and Temozolomide 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 belongs to Central Nervous System; Temozolomide belongs to Oncology.
Why it happens
Additive immunosuppression: S1P receptor modulation reduces lymphocyte counts alongside cytotoxic lymphodepletion.
What to do
Monitor lymphocyte and neutrophil counts and watch for infection. Consider antimicrobial prophylaxis where appropriate, for example Pneumocystis prophylaxis during prolonged temozolomide therapy.
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 Temozolomide
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 Ponesimod with Temozolomide?
MediHelp rates the interaction as moderate. Ponesimod and Temozolomide 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 circulating lymphocytes by sequestering them in lymphoid tissue, while temozolomide causes lymphopenia and myelosuppression. Combined use may increase the risk of infection, including opportunistic infection.
How serious is the interaction between Ponesimod and Temozolomide?
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 lymphocyte and neutrophil counts and watch for infection. Consider antimicrobial prophylaxis where appropriate, for example Pneumocystis prophylaxis during prolonged temozolomide therapy.
What other medicines interact with Temozolomide?
MediHelp also lists interactions of Temozolomide with, for example, Adenovirus types 4 and 7 live, Belatacept, Deferiprone. The full list is on the Temozolomide page.
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