Yes, I received the product & immediately began taking it according to directions, and have already regained my teenage youthful vigor! I didn't expect this. Yesterday, I went to the gym to lift weights and afterwards did several hours of grueling yard work with my wife-- and this morning how did I feel? No back pain-- none at all, which is unbelievable for me. My whole body is completely recovered! I really could do it all over again today - and probably will!. Also seeing and feeling improvements in the "plumbing". Indeed, SD-200 is like the Fountain of Youth!

                                                                                                   Brad F - Alabama, USA