I tried Perfequin for my older horse who has been coming back from a hind suspensory injury. The suspensory healed, but as he was started back in work I noticed a fair amount of stiffness behind, primarily through the hocks and stifles. Before using Perfequin, he would be ridden 3-4 times a week, and was always a little worse on consecutive days. I started the Perfequin powder in his daily grain and after 2 weeks noticed a significant improvement. He was moving more freely behind and was able to increase to being ridden 6 days per week staying at a consistent soundness level.