GHRPs are a small family of peptides acting at the pituitary and
the hypothalamus to release Growth hormone (GH) through the
activation of a specific, G protein-coupled receptor.
They were discovered 20 years ago as synthetic metenkephalin-
derived oligopeptides (Synthetic tissue derived amino acids).
Although it has no structural homology with Growth Hormone
Releasing Hormone (GHRH), in clinical studies GHRP-2 demonstrated
action on the pituitary to release Human Growth Hormone (HGH).
Similar results were effective when GHRP-2 was administered
sublingual. Clinical studies showed the most potent GHRP being the