What it is
A synthetic hexapeptide growth hormone secretagogue. Supplied as a lyophilized powder.
How it works
Agonist of the ghrelin/growth hormone secretagogue receptor (GHS-R1a) on pituitary somatotrophs, stimulating pulsatile growth hormone release. Can also modestly increase prolactin and cortisol.
Where it's used
Approved in Japan as a diagnostic agent for growth hormone deficiency. Studied in research as a GH secretagogue elsewhere.
Regulatory status
Not FDA-approved; research compound in the US. Approved as a diagnostic agent in Japan.
Reconstitution
Supplied as a lyophilized powder requiring reconstitution with bacteriostatic water prior to use.
Tracking it
GHRP-2 is injectable, so two things matter in a log: when you dosed and where. Rotating sites and writing both down prevents the classic “did I already pin the left side?” problem. with a half-life of about 18 minutes, a dose log also lets a tracker model the relative amount still in your system between doses.
Source
Public reference
Last reviewed 2026-06-11