Powerful Amino Acid
N-acetyl cysteine has some potential lung and liver health benefits, and I have taken it fairly regularly for almost 10 years. Since it may raise glutathione levels in the body, it could potentially reverse the graying of hair as well, at least in theory.<br /><br />NAC is best taken on an empty stomach, since it is an amino acid. And, I suggest not taking it before exercise, since it has antioxidant activity, and too much antioxidant activity during exercise can actually negate the benefits of exercise (you want some bodily stress to happen).<br /><br />My main issue with this is the price. It's more expensive (as of now at least) than most other brands of NAC I have ever bought.
Rating: 4 stars