Drug interactions
Nirmatrelvir / ritonavir + Valsartan
Severity: Minor
Nirmatrelvir / ritonavir and Valsartan: minor 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 inhibits hepatic uptake and efflux transporters involved in valsartan clearance, so valsartan levels might rise slightly. With a short 5-day course, the clinical effect is expected to be minimal.
What this interaction means in plain words
Nirmatrelvir / ritonavir and Valsartan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Inhibition of OATP1B1 and MRP2 transporters by ritonavir reducing hepatic clearance of valsartan.
What to do
No dose adjustment is required; monitor blood pressure if symptoms of hypotension appear.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Valsartan
- Aliskiren + Valsartan Contraindicated
- Sparsentan + Valsartan Contraindicated
- Aldesleukin + Valsartan Major
- Amifostine + Valsartan Major
- Amiloride + Valsartan Major
- Amlodipine-benazepril + Valsartan Major
Frequently asked questions
Can I take Nirmatrelvir / ritonavir with Valsartan?
MediHelp rates the interaction as minor. Nirmatrelvir / ritonavir and Valsartan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Ritonavir inhibits hepatic uptake and efflux transporters involved in valsartan clearance, so valsartan levels might rise slightly. With a short 5-day course, the clinical effect is expected to be minimal.
How serious is the interaction between Nirmatrelvir / ritonavir and Valsartan?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose adjustment is required; monitor blood pressure if symptoms of hypotension appear.
What other medicines interact with Valsartan?
MediHelp also lists interactions of Valsartan with, for example, Aliskiren, Sparsentan, Aldesleukin. The full list is on the Valsartan page.
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