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Interaction Rating: Moderate Be cautious with this combination.
Talk with your health provider.
Warfarin is a blood thinner. There is some concern that taking chitosan might increase the blood-thinning effects of warfarin (Coumadin). Taking chitosan with warfarin (Coumadin) could increase the chance of bruising or bleeding. If you take warfarin, avoid taking chitosan.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.