Glutathione (GSH) is a tripeptide i.e. a molecule consisting of three amino acids. GSH combines the amino acids L-Cysteine, L-Glutamic Acid and Glycine.
The supporters of glutathione claim that some children with autism have low levels of active glutathione, which is needed to protect the body from many toxins including toxic metals.
They believe these toxins may cause or exacerbate some of the symptoms of autism, such as impaired communication and social difficulties.
They believe that these difficulties can be overcome by raising glutathione levels. This can be achieved by taking glutathione orally or intravenously, or by taking a combination of vitamins and minerals, or by using chelation.