I've tried doing some searches on this but it's hard since this system won't do a search on just 3 letters... Anyway my dr wants me to try NAC 600mg and says she has had patients do well with it. I currently inject reduced glutathione a couple times a week with no problems. I just took 300mg of NAC and felt weird - almost jittery. It seems to have passed now though but it is affecting my reflux, which is constantly a problem for me taking supplements. I am nervous about a few things with this - I had an issue MSM and not sure if I will have the same issue with NAC, where I felt like I had the worst flu of my life. I know I could try taking molybdenum to see if that helps. But I guess I just want to hear more of people's experiences with NAC and the doses you took. Thanks!