Oral hyaluronic acid rebuilds cartilage

There is evidence that hyaluronic acid, a natural constituent of joint and other connective tissue, can stimulate the cells that make cartilage (chondrocytes). The oral mucosa (tissue that lines the mouth) is rich in the CD44 cell surface receptors for hyaluronate, and lozenge delivery systems are now available that allow the hyaluronic acid to be absorbed orally.