igf-1 lr3 muscle hypertrophy safety vs HGH: Which Growth Enhancer Is Better? IGF-1 LR3: Mechanisms, Dosing, Safety,

Endocrinology 1996

(2013) reporting a duration of mean 2.4 months with longer durations obtained after re-treatment

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

Papi, A., Zheng, J., Criner, G

Differential partitioning of lipids metabolized by separate yeast glycerol-3-phosphate acyltransferases reveals that phospholipase D generation of phosphatidic acid mediates sensitivity to choline-containing lysolipids and drugs