Hyaluronan (HA) is a naturally-occurring lubricant that helps cushion every joint in the body. Your canine companion has over 200 joints in his body. For the competitive edge in obedience and agility, your dog"s joints must be supple and lubricated. LubriSyn CA is a liquid oral joint supplement made of hyaluronan (HA), a naturally occurring part of normal joint fluid. Unlike glucosamine and chondroitin, HA is easily absorbed because it is found naturally in your dog"s body.