what is glucosamine
Glucosamine is a naturally occurring substance found in the fluid around our joints. It is naturally present in animal bones, bone marrow, shellfish and fungi. Glucosamine plays a vital role in building cartilage and is commonly consumed as a supplement by people with arthritis, especially osteoarthritis. Glucosamine, especially glucosamine sulfate, is harvested from the shells of shellfish and put into dietary supplements. It can also be made in the laboratory.