I had been using liposomal and S-Acetyl glutathione for many years
M.FarkasA.LoughranP.et al (2010)
Also, it is not known if silymarin absorbed in humans is enough to cross the blood-brain barrier and also the dosage required for optimum effect is yet to be arrived at
Investigators use GSH to model cellular redox homeostasis, study Phase II detoxification pathways, and probe protein S-glutathionylation as a post-translational regulatory mechanism
Simon DI, Stamler JS, Jaraki O, Keaney JF, Osborne JA, Francis SA, Singel DJ, and Loscalzo J (1993)
Glutathione has extensive research behind it and is a highly effective, unparalleled antioxidant with exceptional potency