About 2 yrs. ago Smokey started to limp off and on. I eventually took him to our vet who prescribed medication. When I got home and read what it does I decided to go the holistic route. My sister in law told me about a pet store and they sold me your product and he became much better in about 3 weeks. Chasing his brother up and down stairs and playing like a kitten. I do notice when he has been too active the next day, he slows down considerably, but has not limped since taking your product. He is approx. 14 yrs old.