Specifically, ethanol was evaluated as a co-solvent
The short plasma half-life of GHK-Cu is one reason why twice-daily dosing schedules are sometimes used in injectable protocols, though the peptide's downstream gene expression effects appear to persist well beyond its plasma clearance
Randolph ME, Afifi M, Gorthi A, Weil R, Wilky BA, Weinreb J, et al
Advanced nano-delivery system: Microfluidizer technology turns Glutathione into nano-size for optimal absorption
Milligan, G
Besides to its antioxidant nature, GSH is involved in the transfer of amino acids by the gamma-glutamyl cycle as well as in the hormonal metabolism of estrogen, leukotrienes, prostaglandins and as a transduction signal for transcription [3]