Glucosamine sulfate provides the joints with the building blocks they need to repair damage caused by osteoarthritis or injuries. Specifically, glucosamine sulfate provides the raw material needed by the body to manufacture a mucopolysaccharide (called glycosaminoglycan) found in cartilage. Glucosamine sulfate may also play a role in wound healing. Where is it found? Glucosamine sulfate does not appear in significant amounts in most diets. Supplemental sources are derived from sea shells.