Have used other products before for a lame mare over the past 13 years . Now have her on just this magic collagen and a natural pain killer. It started when I put myself on collagen for bad joints and I got benefit. So, I wondered if it would help my mare. It seems to have definitely helped as I have taken her off such strong painkillers and she trots about fine now at at age of 29. Wonderful stuff and wish I had found it years ago when she was first injured.