Glucosamine plays a vital role in building cartilage, and many people take it as a supplement to treat arthritis and osteoarthritis. It occurs naturally in the fluid around the joints, in animal bones, bone marrow, shellfish, and fungi.
As we age, cartilage can become less flexible and can steadily breakdown. There is some evidence that glucosamine might slow this process. Further health benefits associated with glucosamine include helping with osteoarthritis (OA), glaucoma, weight loss, bladder health, jaw pain, joint pain, such as knee pain, back pain, multiple sclerosis, HIV and AIDS.