Oral N acetylcysteine ameliorates liver fibrosis and enhances regenerative responses in Mdr2 knockout mice Scientific Reports NAC & Glutathione: The Ultimate Antioxidants for Immunity & Detoxification Acetylcysteine Wikipedia Effects of N acetylcysteine, oral glutathione (GSH) and a novel sublingual form of GSH on oxidative stress markers: A comparative crossover study. ScienceDirect Individuals with MTHFR mutations and slow COMT activity can generally take N acetylcysteine (NAC) and glutathione, but there are some important considerations: ## N Acetylcysteine (NAC) * **Benefits**: NAC supports the production of glutathione, Existing and potential therapeutic uses for N acetylcysteine: The need for conversion to intracellular glutathione for antioxidant benefits ScienceDirect