As I am using a year, I will have to say that, it is best one in pain revilers. When I feel back pain, muscle or joint pain than, I just used this and I really feel too better. It is good product forever. It have best and positive results always. And the most good thing about this is that, it does not have any side effects. It is easy to use. Everyone can use it. My mother was also have pain in kneels. But now when she used this product, she is feeling comfortable now. It provides instant relief withing some time. And price is also good. I would love this product, and I would love to recommended this product to everyone