Heres what we know from the available data thus far: No reported toxicity in preclinical injection studies No behavioral or pathological abnormalities observed No adverse safety signals in topical skin care studies Theoretical concerns about copper overload exist, but no study to date has demonstrated this outcome with GHK-Cu
26 , 830841 e833 (2017)
Glutathione reverses endothelial dysfunction and improves nitric oxide bioavailability
Influence of baseline glutathione concentrations on intervention response We investigated the influence of baseline GSH concentrations on intervention response by plotting the change in overall, parietal, and fronto-parietal GSH as a function of their respective baseline GSH concentrations
Dr Maruthappu agrees that while you shouldn't have any issues with it interacting with other topical skincare products and studies show glutathione to be safe for everyday topical use, with no side effects
2.3 Immunofluorescence Analysis (IFA) Four groups of five animals were created: D0 (without mating with males), D1, D3 and D5 (corresponding day of pregnancy)