Drug interactions
Atorvastatin + Nirmatrelvir
Severity: Major
Atorvastatin and Nirmatrelvir: major interaction.
Last updated Sources: US FDA label
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 is given with ritonavir, which strongly inhibits CYP3A4 and raises atorvastatin exposure. This increases the risk of myopathy and rhabdomyolysis.
What this interaction means in plain words
Atorvastatin and Nirmatrelvir can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Atorvastatin belongs to Cardiovascular; Nirmatrelvir belongs to Anti Virals.
Why it happens
Ritonavir-boosted nirmatrelvir inhibits CYP3A4 and OATP1B, reducing atorvastatin clearance.
What to do
Consider holding atorvastatin during the short treatment course and for a few days afterward, and monitor for muscle symptoms.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Atorvastatin
- Atorvastatin + Tipranavir Contraindicated
- Atazanavir + Atorvastatin Major
- Atorvastatin + Clarithromycin Major
- Atorvastatin + Cobicistat Major
- Atorvastatin + Cyclosporin Major
- Atorvastatin + Danazol Major
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 Atorvastatin with Nirmatrelvir?
MediHelp rates the interaction as major. Atorvastatin and Nirmatrelvir can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Nirmatrelvir is given with ritonavir, which strongly inhibits CYP3A4 and raises atorvastatin exposure. This increases the risk of myopathy and rhabdomyolysis.
How serious is the interaction between Atorvastatin and Nirmatrelvir?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Consider holding atorvastatin during the short treatment course and for a few days afterward, and monitor for muscle symptoms.
What other medicines interact with Atorvastatin?
MediHelp also lists interactions of Atorvastatin with, for example, Tipranavir, Atazanavir, Clarithromycin. The full list is on the Atorvastatin page.
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