Results RNA Advanced Cellular Glutathione Extra StrengthACG Glutathione Extra Strength is a high quality, evidence based spray. Glutathione is one of the most important antioxidants in the body for optimal health, and this intra oral spray provides rapid absorption and superior efficacy. As one of the most important antioxidants in the body, glutathione supports healthy detoxification and promotes a healthy inflammatory response. It is highly concentrated in the liver and is particularly active in tissues