Osteo Bi-Flex is a brand of over-the-counter herbal supplement that contains chondroitin and glucosamine, according to Drugs.com. Osteo Bi-Flex and other similar supplements are intended to relieve joint inflammation and offer relief for people with osteoarthritis.
Chondroitin is a natural bi-product of sugar chains and is associated with increased joint flexibility and healthy fluid production, Drugs.com reports. Glucosamine is a protein that may help renew connective cartilage in joints. The FDA has not approved numerous uses for supplements such as Osteo Bi-Flex, so people should consult their doctors before taking them, especially those who are pregnant, diabetic, on low-salt diets, overweight, or allergic to certain drugs or those with blood-clotting disorders. Known side effects of Osteo Bi-Flex include heartburn, nausea and diarrhea.