The ultimate joint supplement. This amazing formula feeds your horse to enable him or her to 1. Make top quality joint fluid (HA- Hyaluronic acid) and tendon sheath fluid 2. Maintain normal comfort levels and flexibility. All horses need such good quality joint fluid if their joints are to remain healthy, sound and flexible. We describe this feeding with MovefreePlus as being similar to changing the oil in your car. Without an oil change your car will seize up.