Atorvastatin and Warfarin: Drug Interaction Guide
Quick answer: Atorvastatin and Warfarin have a minor interaction — typically manageable with awareness.
How Atorvastatin interacts with Warfarin
Atorvastatin may produce a small increase in anticoagulant effect, possibly through modest effects on CYP-mediated warfarin metabolism.
What you should do
Check the INR after starting, stopping, or substantially changing the atorvastatin dose. Routine concurrent use is generally acceptable if the INR remains stable.
Key facts
Severity
Minor — typically manageable
Mechanism
Atorvastatin may produce a small increase in anticoagulant effect, possibly through modest effects on CYP-mediated warfa...
Action
Check the INR after starting, stopping, or substantially changing the atorvastatin dose. Routine concurrent use is gener...
Frequently asked questions
Can I take Atorvastatin and Warfarin together?
Usually yes, with awareness. Check the INR after starting, stopping, or substantially changing the atorvastatin dose. Routine concurrent use is generally acceptable if the INR remains stable.
What is the severity of this interaction?
The interaction between Atorvastatin and Warfarin is classified as Minor — typically manageable. Atorvastatin may produce a small increase in anticoagulant effect, possibly through modest effects on CYP-mediated warfarin metabolism.
What should I do if I'm prescribed both?
Check the INR after starting, stopping, or substantially changing the atorvastatin dose. Routine concurrent use is generally acceptable if the INR remains stable. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.