Glucosamine is a chemical compound found in your body that produces cartilage. Cartilage is very important because it cushions your joints. It helps in making your movements painless by protecting the ends of your bones from rubbing against each other. Because of the natural wear and tear or even injury, the cartilage tends to break down, resulting to a myriad of disorders that cause you to be impaired in moving normally about. You canâ€™t really get glucosamine naturally in your diet unless you are fond of eating the hard crustacean shells of lobsters, crabs, and shrimps. And it even gets impossible for you to get it naturally if you are allergic to seafood.