คำอธิบาย
Ibuprofen combined with warfarin substantially increases bleeding risk, particularly gastrointestinal hemorrhage, through complementary antiplatelet and mucosal injury mechanisms.
กลไก
Ibuprofen reversibly inhibits COX-1 and COX-2, impairing platelet function and causing gastric mucosal damage; high-dose ibuprofen can also inhibit CYP2C9, increasing warfarin plasma levels.
ความสำคัญทางคลินิก
The combination is associated with a 3- to 15-fold increased risk of upper GI hemorrhage compared with warfarin alone.
การจัดการ
Avoid concurrent use; substitute acetaminophen (≤2 g/day) for mild-to-moderate pain. If NSAID is essential, add a PPI and increase INR monitoring frequency.
ข้อจำกัดความรับผิดชอบทางการแพทย์
This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.