Drug interactions
Mometasone + Nelfinavir
Severity: Moderate
Mometasone and Nelfinavir: 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
Nelfinavir inhibits CYP3A4 and can raise systemic mometasone exposure. This increases the risk of Cushing's syndrome and adrenal suppression with prolonged use.
What this interaction means in plain words
Mometasone and Nelfinavir 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.
Mometasone belongs to Respiratory; Nelfinavir belongs to Anti Virals.
Why it happens
Nelfinavir inhibits CYP3A4-mediated mometasone metabolism.
What to do
Monitor for corticosteroid excess and adrenal suppression. Consider beclomethasone for long-term 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 Mometasone
- Mometasone + Ritonavir Major
- Atazanavir + Mometasone Moderate
- Clarithromycin + Mometasone Moderate
- Cobicistat + Mometasone Moderate
- Darunavir + Mometasone Moderate
- Elvitegravir / cobicistat / emtricitabine / tenofovir df + Mometasone Moderate
Other interactions of Nelfinavir
- Alfuzosin + Nelfinavir Contraindicated
- Avanafil + Nelfinavir Contraindicated
- Dronedarone + Nelfinavir Contraindicated
- Eletriptan + Nelfinavir Contraindicated
- Ergotamine + Nelfinavir Contraindicated
- Flibanserin + Nelfinavir Contraindicated
Frequently asked questions
Can I take Mometasone with Nelfinavir?
MediHelp rates the interaction as moderate. Mometasone and Nelfinavir 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. Nelfinavir inhibits CYP3A4 and can raise systemic mometasone exposure. This increases the risk of Cushing's syndrome and adrenal suppression with prolonged use.
How serious is the interaction between Mometasone and Nelfinavir?
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 for corticosteroid excess and adrenal suppression. Consider beclomethasone for long-term therapy.
What other medicines interact with Mometasone?
MediHelp also lists interactions of Mometasone with, for example, Ritonavir, Atazanavir, Clarithromycin. The full list is on the Mometasone page.
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