Not all uses for chondroitin and glucosamine have been approved by the FDA. Chondroitin and glucosamine should not be substituted for medications prescribed for you by your doctor.
Chondroitin and glucosamine is often sold as an herbal supplement. There are no regulated manufacturing standards in place for many herbal compounds and some marketed supplements have been found to be contaminated with toxic metals or other drugs. Herbal/health supplements should be purchased from a reliable source to minimize the risk of contamination.
Before using chondroitin and glucosamine, talk to your doctor, pharmacist, herbalist, or other healthcare provider. You may not be able to use chondroitin and glucosamine if you have diabetes, a bleeding or blood clotting disorder such as hemophilia, if you have allergies to certain drugs, if you are overweight, or if you are on a low-salt diet.
Use chondroitin and glucosamine as directed on the label, or as your healthcare provider has prescribed. Do not use this product in larger amounts or for longer than recommended.
Do not take chondroitin and glucosamine without the advice of a healthcare provider if you are using insulin, or a blood thinner such as anisindione (Miradon) or warfarin (Coumadin).
Avoid taking chitosan (usually marketed as a weight-loss product) while you are taking chondroitin and glucosamine. Chitosan can make it harder for your body to absorb chondroitin.