Important upfront: in the Western pharmaceutical world BPC-157 never passed Phase 3 trials (= the large clinical trials required before drug approval)
The 0.9 percent benzyl alcohol acts as a preservative and inhibits common bacterial growth
Gluten-free, casein-free
Julve Parreo JM, Huet E, Fernndez-Del-Carmen A, Segura A, Venturi M, Ganda A, Pan WS, Albaladejo I, Forment J, Pla D, Wigdorovitz A, Calvete JJ, Gutirrez C, Gutirrez JM, Granell A, Orzez D (2018) A synthetic biology approach for consistent production of plant-made recombinant polyclonal antibodies against snake venom toxins
doi: 10.3390/life11050438 108
However, if you happen to be choosing between the two, GHK-Cu is usually the better option since it helps the body use copper in a way that supports healthy skin, even being compared to Matrixyl Does GHK Combine with Copper Ions Naturally