After two decades of research, Dr. Gustavo Bounous, a distinguished Canadian surgeon and immunologist from McGill University, discovered the mechanism for raising glutathione naturally, and without drugs. His research animals lived 30-50% longer, and were less vulnerable to cancer and other diseases when fed a special protein containing high levels of cystine.

Since then, he has collaborated with others to perfect a bioactive protein that delivers to the individual cells of the body the PRECISE PRECURSORS they need to stimulate the production of glutathione.  Published medical journal articles by Dr. Bounous (Type in "Bounous G" in the search line)

Glutathione must be produced within the cells.  Oral glutathione in pill form is NOT absorbed, but will be eliminated by the liver before reaching the blood stream.  Cystine is NOT well absorbed when taken orally.  Injectable glutathione is degraded by the time it gets to the cell and much of it cannot effectively pass through the cell membrane.  NAC (N Acetyl L-Cysteine) has not proven useful in the treatment of chronic, long-term glutathione deficiencies.  Therapeutic levels of oral NAC  have been associated with cerebral symptoms, nausea, blurred vision and vomiting.