My vet recommended HempRx (which I ordered from Well Pet Dispensary) for my lab when we were trying to get her arthritis under control. She said it was one of only 2 brands that were actually tested for clarity, and it was what she used for her dogs. It worked for about 6 months to keep the inflammation under control, before we had to give in and put her on pharmaceuticals. But tbf, she was already pretty far advanced when we started her on it. Hope that helps!