Glutathione is the main endogenous antioxidant that protects cells from oxidative damage. Glutathione is a tripeptide formed by the combination of the amino acids glycine, cysteine and glutamic acid and is known as the "master antioxidant." The combination of N-Acetylcysteine, L-Glutathione, L-Glycine, L-Glutamine and Selenium is an ideal formula to protect our body from oxidative stress and maintain an efficient immune system. PreGlutationPro formula has a beneficial effect on the digestive, respiratory and immune systems and plays an important role in reducing toxins from the body. How to use: Take 1 capsule a day or according to professional criteria.