My dog has been on Flexicose for 6.5 years and she's awesome. I was told that she had been hit by a car before I adopted her and at times she ended up on 3 legs, due to arthritis.
I found Flexicose in a holistic petshop and the owner told me that she was taking it herself and that she could hardly function without it.
It worked very fast and she's been on all 4 legs since. She runs, jumps and chases deer. You can't tell that there was any problem with her leg or that she's 9 years old.
I have also recommended it to several other people, who have all told me how it has changed the life of their pet.