N acetylcysteine infusion alters blood redox status but not time to fatigue during intense exercise in humans Journal of Applied Physiology American Physiological Society Glutathione deficiency induces epigenetic alterations of vitamin D metabolism genes in the livers of high fat diet fed obese mice Scientific Reports Your Glutathione Index Defines How Your Cells Are Ageing Effects of N acetylcysteine, oral glutathione (GSH) and a novel sublingual form of GSH on oxidative stress markers: A comparative crossover study. ScienceDirect