Have I bought this stuff and take it now for two weeks and have to say top. In the beginning was skeptical whether it brings what ever, now I know about my back pain is no longer felt no more pain in my knees'm well rested and alert than a few weeks ago. My wife with rheumatism has also begun to take it himself and she says that she has less pain. I am grateful to the recommended me this product. (No not receiving commissions) tried it out.