10.1002/open.201900344 36 EvnouchidouI.PapakyriakouA.StratikosE
One study of 30 patients on nasal glutathione dosed at either 300mg or 600mg daily in three divided doses vs placebo over a three month period found significant improvement in UPDRS scores in the treatment arms over placebo while other measures of toxicity such as cell counts, liver enzymes, creatinine, blood urea nitrogen, and urinalysis were not significantly different between placebo and treatment groups
If HSPA1 induction is impaired, cells may have a reduced ability to tolerate heat-induced proteotoxic stress, which can contribute to severe damage during spermatogenesis (Williams et al., 2019
Highly acidic formulations, such as those used with vitamin C or alpha-hydroxy acids, can destabilize the copper complex, a real compatibility issue that product layering advice frequently ignores
The evidence base is more mechanistic than clinical at this point
By your 40s, you may have significantly less glutathione than you did in your 20s