Before I tried this product, my doctor was discussing with me the need of knee replacement surgery due to the significant arthritis damage and pain. Obviously I was very concern since I am only in my early 40s and I still enjoying playing baseball (not to be confused with softball). I decided to try this product since its components are very similar to the shot medication I was taking (annually) in my knees to restore some of the lost membrane between my joints due to arthritis. After just 3 days taking this medication, the pain was mostly gone and I am almost pain free. I have only being taking the product for a month, but I can already see the miracle in the amount of free pain movement on my knees. I am not sure why doctors are unfamiliar with this product and don't recommend it as an option to arthritis relief.