Glutathione Absorption Rates & Factors PDF) Glutathione loaded non ionic surfactant niosomes: A new approach to improve oral bioavailability and hepatoprotective efficacy of glutathione Effects of N acetylcysteine, oral glutathione (GSH) and a novel sublingual form of GSH on oxidative stress markers: A comparative crossover study. ScienceDirect Glutathione IV Glutathione is your body's master antioxidant. It plays a critical role in detoxification pathways, mitochondrial protection, and cellular repair. Delivered intravenously, it provides higher bioavailability than oral supplementation