Check out Adequan, it's the real deal X10. If you can get your Vet to prescribe the equine Adequan it's the exact same drug as the K9 Adequan at half the price. I will never have a dog that isn't given a course of Adequan at 6 to 7 months old. There are studies that show that it helps with future joint injuries..they give it to most race horses at a young age for the same reason.......it works. But it's also a great med to give to older dogs when they start to slow down or come up lame.