However, different forms of l-citrulline were used between the groups, so it's tough to say for sure how the glutathione made a difference
Protection: Keep all vials protected from light and maintain cold chain during storage
GHK-Cu is discussed here in the context of published research, clinical trials, and user-reported observations
Activation of Akt also affects glucose metabolism inducing an increase in glucose and amino acid uptake (Edinger and Thompson, 2002, Kohn, Summers, Birnbaum et al., 1996)
Taking it away from food prevents the chelating agents from binding to the minerals present in your diet and ensures that the amino acids do not have to compete with dietary proteins for absorption across the intestinal lining
They showed gut microbiota to be able to partially sequester dietary Se, limiting its uptake by the host