In one mouse study, researchers found that the peptide reduced the pain felt by the animals in their paws when placed on a mildly hot plate. The authors explained that this could be because GHK is similar in structure to cimetidine, a histamine H2 receptor antagonist sometimes given to reduce pain in certain digestive conditions
The process is usually painless, with only a slight pinch at the insertion site
[ CrossRef ] [ PubMed ] Xu D, Wu L, Jiang X, Yang L, Cheng J, Chen H, et al
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