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The GHRP-6 vs GHRP-2 difference comes down to the side effect profile and the appetite signal, and that single difference is what decides which one you want

doi:10.1186/s12967-016-0982-x

Researchers posited that the peptide caused an increase in total pituitary RNA and GH mRNA, suggesting that proliferation of somatotroph cells had occurred, as confirmed by immunohistochemistry images . Conversely, Ipamorelin might preferentially target a distinct class of receptors believed to be growth hormone secretagogue receptor 1a (GHS-R1a), commonly called ghrelin receptors, which endogenously respond to the hormone ghrelin, according to research by Jimnez-Reina et al

(2025) Growth hormone and aging: A clinical review Viral Chikani, & Ken K Y Ho (2014) Action of GH on skeletal muscle function: molecular and metabolic mechanisms Shin-Hye Kim, & Mi-Jung Park (2017) Effects of Growth Hormone on Glucose Metabolism and Insulin Resistance in Human R