I had a interesting conversation with a much smarter man than I .. He said that using bac water with benzyl alcohol would affect the growth hormone .. He insisted I use sterile water with no additives .. So I changed over yesterday does anyone know the truth to this debate .. Please provide science or personal experience I don't want to hear what you may have read on other boards ... I have read many things that say bac water is ok but I also have read the preferred method to reconstitute somatropin is with sterile water .. So why is that preferred maybe there is some truth to what this Doctor told me .. Thanks ..