Pharmaceutical Grade Glutathione: Glutathione is the most abundant intracellular thiol (ie, a compound with a sulfhydryl group) and low molecular weight tripeptide found in living cells; Tripeptide includes glycine, cysteine and glutamate Intracellular Antioxidant: The antioxidant functions of glutathione include recycling vitamin E and C and serving as an antioxidant in all types of tissues; A low ratio of reduced vs oxidized glutathione is used as a measure of cellular toxicity Veggie Capsules: Each veggie capsule delivers 500 mg of glutathione; Take one capsule per day with a meal or as directed by your qualified healthcare professional Superior Nutrition and Formulation: The goal of Jarrow Formulas is to promote optimal health with high-quality, effective, affordable, and superior formulation of dietary supplements; Our customers can be assured of purity, value, and potency