these "size pills" are all scams. If they do anything they serve the purpose of a weak version of an ED med like viagra or cialis. All its meant to do is keep you half-cocked, there is no actual growth. Gaining size might work for you with pumps, weights, or jelqing but even thats iffy. The only guarenteed method is surgery and that would be for only a gain up to 1" and would probably leaving you with a broken member that hurts or doesnt work.