Every cell in the human body needs and has the substance glutathione and it is often called the Master Antioxidant in the body. Inside every cell, it acts to neutralize free radicals and prevent cellular damage. Glutathione, unfortunately, does not effectively absorb as a supplement. It is constructed from three amino acids, namely cysteine, glutamine and glycine. N-Acetyl-Cysteine is the preferred precursor which, when supplied, allows the body to synthesize glutathione and serves to support the body, especially the liver, with detoxification. Poor diet, pollution, toxins, medications, stress, trauma, aging and infections can all deplete glutathione in the body. Thus, supplements that can support the body’s ability to make more glutathione is often necessary. It has also been used for years to help treat asthma, lung disease, and to treat liver failure from Tylenol overdoses.
Prothera, Inc. 2016 Patient Catalog, pg.15.