Melissa Afflerbach Let's talk about NAC (aka the underrated glow from within supplement) If you've never heard of NAC (N acetyl cysteine), it's one of those Instagram Effects of N acetylcysteine, oral glutathione (GSH) and a novel sublingual form of GSH on oxidative stress markers: A comparative crossover study. ScienceDirect N Acetyl Cysteine Functions as a Fast Acting Antioxidant by Triggering Intracellular H2S and Sulfane Sulfur Production: Cell Chemical Biology As I mention in my book, N acetyl cysteine (NAC) is not found in food sources, but in the body, it converts into cysteine. NAC acts as a precursor to glutathione, a powerful