I just don't get why GSH seems to help many, but not others. Ashleigh still cultures PA and now MRSA and we never missed a day of inhale GSH over the past 8 months. We also continued to use oral GSH which appeared to do wonders for a few years and then problems came on about a year ago and the GSH didn't seem to help. Although during that time her PFT's were fabulous. We just can't seem to figure out why the GSH stopped helping. I guess it isn't full proof. I do feel like the inhaled helps her sinuses, but we don't want to use GSH while she is on all of these antibiotics b/c of the yeast issue.