I don't know if the product is actually working, his name is "punk",he's going on 12 years old, his back legs ain't what they used to be,and he's a little overweight, but I add atleast 2 pills a day into his food, he's a house cat,my best friend, me and my wife love him more than anything, I know he has health issues, but we will be here for him until his last breath,we're not letting him go, yet..