glucosamine alone or with chondroitin can interact with warfarin
June 2008
Growing evidence suggests that glucosamine alone or with chondroitin can interact with warfarin.
We alerted you to a potential interaction about 4 years ago... asking you to report cases. Now over 40 reports suggest that glucosamine products can increase INR in some warfarin patients.
The interaction is probably rare. But some cases report a doubling or more of INR...and serious bleeding complications.
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