Drug interactions
Amlodipine-olmesartan-hydrochlorothiazide + Nirmatrelvir / ritonavir
Severity: Moderate
Amlodipine-olmesartan-hydrochlorothiazide and Nirmatrelvir / ritonavir: 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
Ritonavir strongly inhibits CYP3A4 and can raise amlodipine concentrations. This may cause hypotension and peripheral edema.
What this interaction means in plain words
Amlodipine-olmesartan-hydrochlorothiazide and Nirmatrelvir / ritonavir 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.
Why it happens
Ritonavir inhibits CYP3A4, decreasing amlodipine metabolism.
What to do
Consider reducing the amlodipine dose by about half during the 5-day course and for a few days afterward, and monitor blood pressure and edema.
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 Amlodipine-olmesartan-hydrochlorothiazide
- Aliskiren + Amlodipine-olmesartan-hydrochlorothiazide Contraindicated
- Amlodipine-olmesartan-hydrochlorothiazide + Dofetilide Contraindicated
- Amlodipine-olmesartan-hydrochlorothiazide + Sparsentan Contraindicated
- Acemetacin + Amlodipine-olmesartan-hydrochlorothiazide Major
- Aldesleukin + Amlodipine-olmesartan-hydrochlorothiazide Major
- Amifostine + Amlodipine-olmesartan-hydrochlorothiazide Major
Frequently asked questions
Can I take Amlodipine-olmesartan-hydrochlorothiazide with Nirmatrelvir / ritonavir?
MediHelp rates the interaction as moderate. Amlodipine-olmesartan-hydrochlorothiazide and Nirmatrelvir / ritonavir 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. Ritonavir strongly inhibits CYP3A4 and can raise amlodipine concentrations. This may cause hypotension and peripheral edema.
How serious is the interaction between Amlodipine-olmesartan-hydrochlorothiazide and Nirmatrelvir / ritonavir?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Consider reducing the amlodipine dose by about half during the 5-day course and for a few days afterward, and monitor blood pressure and edema.
What other medicines interact with Amlodipine-olmesartan-hydrochlorothiazide?
MediHelp also lists interactions of Amlodipine-olmesartan-hydrochlorothiazide with, for example, Aliskiren, Dofetilide, Sparsentan. The full list is on the Amlodipine-olmesartan-hydrochlorothiazide page.
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