We tried a joint supplement from my vet for a dog we had just rescued for approximately 2 weeks and it did not seem to do anything. We were about to give up on even trying a supplement but while at my local pet store I came across your product and decided to try it. WOW! The over weight abused American Bulldog that we rescued responded well within the 1st few days. She was able to get up and down the stairs in our home (she could not before) and after about 2 weeks she was jumping around like she found the fountain of youth. I began giving it to the AB that we already had who was already in outstanding shape and he to began acting as though he was a puppy again. I like this product A LOT and am getting another bottle today as I ran out this morning.