I've started to take some NAC for my oral cycle, and it seems everytime i take it my stomach starts to turn a little bit, it's not a throw up feeling it's some weird feeling i've never had before. It's probably not my stomach...i dunno really...but it's 4 inches below my pecs in the middle of my chest. This unpleasentness starts about 10 minutes after taking the NAC. Is this normal? Also what dosage do you guys normally take NAC in and at what times?