A potent growth-hormone-releasing peptide and ghrelin-receptor agonist studied for stimulating GH release; also investigated as a diagnostic test of pituitary GH reserve.
Mechanism under study
Activates the GHS-R1a (ghrelin) receptor to drive a GH pulse; can modestly raise cortisol and prolactin at higher exposure compared with ipamorelin.
Research-reported dosing
Research references commonly cite ~100–300 mcg per dose, often paired with a GHRH analog. Not established for general human use.
Based on a standard 10 mg vial: with 2 mL bacteriostatic water = 5,000 mcg/mL (5 mg/mL); 1 unit ≈ 50 mcg.
A 200 mcg dose ≈ 4 units (50 mcg per unit).
Open this mix in the calculator →Source research-grade GHRP-2 ↗Dosing figures describe how this compound appears in the research literature and research-community references. They are not a recommendation for human use.
GHRP-2 FAQ
What is GHRP-2?
A potent growth-hormone-releasing peptide and ghrelin-receptor agonist studied for stimulating GH release; also investigated as a diagnostic test of pituitary GH reserve.
What is the half-life of GHRP-2?
Approximately 15–60 minutes.
What is the research-reported dosing for GHRP-2?
Research references commonly cite ~100–300 mcg per dose, often paired with a GHRH analog. Not established for general human use.
How is GHRP-2 reconstituted?
Based on a standard 10 mg vial: with 2 mL bacteriostatic water = 5,000 mcg/mL (5 mg/mL); 1 unit ≈ 50 mcg.
Is GHRP-2 FDA-approved?
No — GHRP-2 is not FDA-approved and is sold for laboratory research use only.
References
Related peptides
GHRP-6
Growth-hormone-releasing peptide (ghrelin-receptor agonist)
An early growth-hormone-releasing hexapeptide notable in research for a pronounced appetite-stimulating (hunger) effect alongside GH release.
Ipamorelin
Ghrelin-receptor agonist (GH secretagogue)
A selective ghrelin-receptor agonist studied for stimulating growth-hormone release with comparatively little effect on cortisol or prolactin, making it a frequently referenced 'clean' secretagogue.
Hexarelin
Growth-hormone-releasing peptide (ghrelin-receptor agonist)
A potent synthetic GH-releasing hexapeptide, structurally related to GHRP-6, additionally studied for cardiovascular-tissue effects in preclinical models.