N-acetyl cysteine (NAC) has been recommended by nutritionists for decades as a very safe amino acid nutritional supplement that is a precursor for glutathione production in the body. (Glutathione is a major de-toxifier.) The FDA is hinting that it may review this supplement’s classification and, therefore, possibly make it difficult to purchase. Please give the FDA a call at 888-463-6332 and ask that the classification not be changed. NAC has many other important functions in humans–take a look at this Mercola.com article to learn more about FDA’s actions and the benefits of NAC.