Hyalun® PRO is the next generation of Hyalun®. Hyalun® PRO still contains the same original, high molecular weight HA that Hyalogic has become known for. However, Hyalun® PRO contains a higher amount of HA delivered per trigger squeeze. This is particularly effective for competitive horses and their joints that are subject to enormous amounts of stress. The high concentration of HA in Hyalun® PRO has been designed to assist in maintaining your horse’s healthy joints.