I don’t know.. figured it good or better than nothing.. in 4th month giving it 6 more months and continuing research following others replies, Still at 18 lbs is porky, is 13 years, farmersDog, ..should be 12 lbs.. small dog hooking… needs more addressing… doctor say heart okay at home, not a dog walking buddy, is healthy, she’s generally okay

While this product didn't work for my Leo, I'm giving it 4 stars because the customer service from the company was very responsive.

Been using only a couple of months and my pup already seems to have more energy and wants to play more.