However, they work through different mechanisms and can complement each other when used thoughtfully
What Is Glutathione, and Why Is It So Popular
Studies using the Broad Institute Connectivity Map show that GHK peptide modulates expression of multiple genes, resetting pathological gene expression patterns back to health
An MJFF-funded Phase IIb placebo-controlled trial is currently examining the effects of intranasal glutathione on Parkinsons symptoms (both motor and non-motor)
However, it did improve anxiety symptoms in the patients.[ref] A meta-analysis of clinical trials using 900 2700 mg/day showed that NAC may improve hearing loss (noise-induced).[ref] Keep in mind that these studies involved patients who were likely to have increased glutathione use
A subsequent study of the same region reported increased TRP levels and an elevated KYN/TRP ratio, with KP activation extending to the downstream metabolite 3-HAA [234]