A peptide is a naturally occurring protein. Glutathione is a very small tripeptide composed of three amino acids: glycine, glutamine and cysteine. It is made in every cell in the body. The diagram shows a GSH molecule; the yellow sphere represents a sulfur atom which explains why GSH has a distinct aroma. It may make GSH smell a little like rotten eggs, but sulfur plays a major role in glutathione’s antioxidant and detoxification functions.
What Glutathione Is
THE MOST IMPORTANT ANTIOXIDANT
AS ONE RESEARCH ARTICLE STATES:
“Glutathione deficiency contributes to oxidative stress, which plays a key role in aging and the pathogenesis of many diseases (including seizure, Alzheimer’s disease, Parkinson’s disease, liver disease, cystic fibrosis, sickle cell anemia, HIV, AIDS, cancer, heart attack, stroke, and diabetes). New knowledge of the nutritional regulation of GSH metabolism is critical for the development of effective strategies to improve health and to treat these diseases.” PMID: 14988435