ghk cu injection hurts ghk-cu pain If you're using and it stings a little (which is common)… ghk-cu burn Mitigating Injection Pain:

Delta-sleep-inducing peptide (DSIP): an update

Pyloric sphincter seems to be more affected (white bars)

However, more important is the practical evidence from a considerable number of the studies, particularly in gastrointestinal research, that intragastric administration or per os administration in drinking water, is equally effective as injections of the supplement administered to rodents, which has been performed in the majority of studies on BPC 157

Should I take GHK-Cu on an empty stomach

It has also shown promise of healing when added to drinking water given to rodents such as rats that had damage to their medial collateral ligaments