"I really can not say enough about this product. It was recommended by our vet for my 2 dogs who are getting up their in age, and having mobility issues. I didn't notice much change at first. It was my neighbor who said to me, what are you giving to these two? They have been running around like puppies, playing and having fun. And he was right. I'm not really sure what I expected. It almost seems like they have gone back in time a couple years. I have never written a review about anything before. This time I had too. I love my babies so much, and anything that I feel will give me a little more time wit them, I am in."