Drug interactions
Methylprednisolone + Nirmatrelvir
Severity: Moderate
Methylprednisolone and Nirmatrelvir: 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
Nirmatrelvir given with ritonavir inhibits CYP3A4 and can raise methylprednisolone exposure. Prolonged coadministration risks Cushing syndrome and adrenal suppression, though a short course has lesser risk.
What this interaction means in plain words
Methylprednisolone and Nirmatrelvir 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.
Methylprednisolone belongs to Endocrine; Nirmatrelvir belongs to Anti Virals.
Why it happens
CYP3A4 inhibition (mainly by the ritonavir booster) reduces methylprednisolone clearance.
What to do
For short courses, monitor for steroid adverse effects such as hyperglycemia; for prolonged use consider an alternative steroid less dependent on CYP3A4 or reduce the methylprednisolone dose.
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 Methylprednisolone
- Bcg vaccine live + Methylprednisolone Contraindicated
- Measles mumps and rubella vaccine live + Methylprednisolone Contraindicated
- Measles mumps rubella and varicella vaccine live + Methylprednisolone Contraindicated
- Measles vaccine + Methylprednisolone Contraindicated
- Methylprednisolone + Mifepristone Contraindicated
- Methylprednisolone + Rubella vaccine Contraindicated
Other interactions of Nirmatrelvir
- Alfuzosin + Nirmatrelvir Contraindicated
- Amiodarone + Nirmatrelvir Contraindicated
- Apalutamide + Nirmatrelvir Contraindicated
- Carbamazepine + Nirmatrelvir Contraindicated
- Colchicine + Nirmatrelvir Contraindicated
- Dronedarone + Nirmatrelvir Contraindicated
Frequently asked questions
Can I take Methylprednisolone with Nirmatrelvir?
MediHelp rates the interaction as moderate. Methylprednisolone and Nirmatrelvir 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. Nirmatrelvir given with ritonavir inhibits CYP3A4 and can raise methylprednisolone exposure. Prolonged coadministration risks Cushing syndrome and adrenal suppression, though a short course has lesser risk.
How serious is the interaction between Methylprednisolone and Nirmatrelvir?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: For short courses, monitor for steroid adverse effects such as hyperglycemia; for prolonged use consider an alternative steroid less dependent on CYP3A4 or reduce the methylprednisolone dose.
What other medicines interact with Methylprednisolone?
MediHelp also lists interactions of Methylprednisolone with, for example, Bcg vaccine live, Measles mumps and rubella vaccine live, Measles mumps rubella and varicella vaccine live. The full list is on the Methylprednisolone page.
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