The Cochrane reviewers graded the vascular-dementia benefit as very low quality, the trials cluster in regions where manufacturer influence and publication bias are hard to exclude, and a mortality-neutral result with a harm signal at high dose is not a ringing endorsement
FDA Status, Approved Indications, and Regulatory Considerations GHK-Cu has no FDA-approved indications for medical use [11]
Punia H, Tokas J, Malik A, Bajguz A, El-Sheikh MA, Ahmad P (2021) Ascorbate-Glutathione Oxidant Scavengers, Metabolome Analysis and Adaptation Mechanisms of Ion Exclusion in Sorghum under Salt Stress
Cellular Uptake While both S-Acetyl L Glutathione and Liposomal Glutathione display improved cellular uptake compared to regular glutathione, the specific degree of improvement between the two forms has not been well established in the literature