Affinity tagging has made possible the expression and purification of large numbers of proteins by a single purification scheme
(2011) Stable gastric pentadecapeptide BPC 157:novel therapy in gastrointestinal tract
And as sales fall, its only gotten worse
Callewaert BL, Willaert A, Kerstjens-Frederikse WS, De Backer J, Devriendt K, Albrecht B, Ramos-Arroyo MA, Doco-Fenzy M, Hennekam RC, Pyeritz RE, Krogmann ON, Gillessen-kaesbach G, Wakeling EL, Nik-zainal S, Francannet C, Mauran P, Booth C, Barrow M, Dekens R, Loeys BL, Coucke PJ, De Paepe AM
Camm EJ, Tijsseling D, Richter HG, Adler A, Hansell JA, Derks JB, Cross CM, Giussani DA (2011) Oxidative stress in the developing brain: effects of postnatal glucocorticoid therapy and antioxidants in the rat
Current evidence regarding toxicity from GHK-Cu is limited, but factors such as product concentration, frequency of use, and underlying health conditions (like Wilson's disease) may influence risk considerations