For joint and cartilage support Made from pure Hyaluronan, a natural component of the body With added vitamin C for support of normal collagen function of cartilage Modern Herbals Syno-Vital Hyaluronan Sachets is made of pure Hyaluronic (HA) which is a natural component of the body. HA is found in the synovial fluid of the joints, the connective tissues, the vitreous humour (fluid) of the eye, and most abundantly in the skin. It binds 1000 times its weight in water, which makes it the ultimate natural moisturiser. As we get older, the body produces less HA. Syno-Vital combines pure HA with vitamin C, which contributes to normal collagen formation for normal function of the cartilage.