This unit neutralizes the vibrations of uric acid in muscles which can cause soreness in arms, shoulders, legs or back. Gout and spurs may be considered an advanced uric acid problem. People with high uric acid generally have a long history of alkalosis. This unit works much easier than long cider vinegar/water tub soaks. We would all do well to stay slightly on the acid side of the scale. Details This unit neutralizes the vibrations of uric acid in muscles which can cause soreness in arms, shoulders, legs or back.