Tag: anticoagulant interactions

Phenytoin and warfarin interact in two phases: an early spike in INR due to protein displacement, followed by a delayed drop as liver enzymes break down warfarin faster. Intensive INR monitoring is essential to prevent bleeding or clots.

COVID-19 and antiviral drugs like Paxlovid can dangerously alter how blood thinners work, increasing risks of bleeding or clots. Learn how DOACs and warfarin interact with treatments, what to do if you're on them, and how to stay safe.