What Are the Side Effects of Glucosamine?

In your articles about osteoarthritis, you mention that glucosamine chondroitin has helped to relieve symptoms of pain and stiffness for some people. Could you tell me what side effects can be expected from taking that food supplement? Also, could there be any interaction with Lescol?

Glucosamine and chondroitin is generally very well tolerated. Possible side effects include upset stomach, skin rash, aggravation of pre-existing diabetes, and alteration of the effects of the blood-thinning drug warfarin (coumadin). I am not aware of any possible interaction with Lescol.

Thank you for your question.