A powerful antioxidant full of amino acids cysteine, glycine and glutamic. Glutathione is vital to mitochondrial function and necessary to produce DNA. Its ability to cross the blood brain barrier means it plays an important role in removing toxins, such as mercury, from the brain and other cells. It is a powerful antioxidant that helps fight the effects of free radicals, which causes oxidative stress, damages, healthy cells, and contributes to aging. Glutathione levels in the body naturally declined as we age, but can also be reduced by factors like stress, malnutrition, and environmental toxins.