I was a bit skeptical, but after a month, I couldn't be any happier. My 12 year old small doggy was sleeping his days away, all of the life out of him. We removed a cancerous growth recently. He's been taking the pills for a month now, and he is so much more active. He does not spend all of his time sleeping next to me anymore, he constantly is begging for snacks and hunting around the house again. His quality of life is so much better. I would say it's a miracle in a pill. He's young again. I thought I might get another year with him if I was lucky, but now I hope he's happy for many years to come.