Each capsule contains 500 mg of pharmaceutical-grade reduced glutathione (GSH), a tripeptide composed of glycine, cysteine, and glutamate
Combined glutathione S-transferase (GST)P1 (rs1138272 and rs1695) and GSTM3 genotypes showed cumulative risk regarding both occurrence and severity of COVID-19 (Coric et al., 2021)
therefore consultation from your doctor is recommended prior administering injections containing this substance into your body..
GHK (Gly-His-Lys) without copper is a simple tripeptide with a strong affinity for Cu(II) ions (log stability constant ~16.2), while GHK-Cu is the pre-formed 1:1 copper-peptide complex with distinct biological activity profiles
Budget and reviews also play roles
Yin Z, Albrecht J, Syversen T, Jiang H, Summar M, Rocha JBTda, Farina M, Aschner M (2009) Comparison of alterations in amino acids content in cultured astrocytes or neurons exposed to methylmercury separately or in co-culture