ghk-cu immunogenicity antibody response If you injected or MOTS-C and got a huge red welt that felt like an allergic reaction, that's almost certainly a histamine response. Your skin is full of mast cells packed Frontiers | Role of peptide–cell

Its similar in structure to a growth hormone releasing hormone (GHRH)

Melanoma Res 14:A14A15 Seiwerth S, Rucman R, Turkovic B, Sever M, Klicek R, Radic B, Drmic D, Stupnisek M, Misic M, Vuletic LB, Pavlov KH (2018) BPC 157 and standard angiogenic growth factors

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Research demonstrates BPC-157 increases mesenchymal cell recruitment with periosteum reactivation occurring within 3 days of treatment initiation, establishing conditions favorable for rapid bone repair

Common solvents include bacteriostatic water, sterile saline, acidic buffers, and compatible analytical solvents.

There are, however, two studies that we can call on: Pentadecapeptide BPC 157 Interactions with Adrenergic and Dopaminergic Systems in Mucosal Protection in Stress (link) This study wasnt designed to find the comparison between two administration methods, but it did look at how different systems of the body would affect these two methods