Devil's Claw 5.0 / 5 Independent Feedback based on 6 verified reviews. Trusted Customer Iâ€™ve only been using this for just over a week so no real results seen yet. However, delivery was very quick. Mary Dunnett 6 months ago. Too early to give results but product palatable and easily added to feed. Mrs Gayle Tyler 6 months ago. Has made a big difference Mr Neil Johnson 8 months ago. Our horse has arthritis and this has helped big time Alison Eckersley 9 months ago. Good packaging and manageable to feed Trusted Customer Think it is making a difference to my old mare, she seems less stiff.