In short: GHRP-2 (Growth Hormone Releasing Peptide-2) is a synthetic hexapeptide growth hormone secretagogue studied in pre-clinical models for its activation of the ghrelin receptor (GHS-R1a). It is supplied strictly for in-vitro laboratory research and is not approved for human consumption. Research buyers should confirm any material against three criteria before purchase: ≥99% purity by HPLC, identity confirmed by mass spectrometry, and clear batch numbering tied to a certificate of analysis.
What is GHRP-2?
GHRP-2 is a synthetic hexapeptide belonging to the growth hormone-releasing peptide (GHRP) family, the class of ghrelin-mimetic secretagogues first developed from structure-activity work by Cyril Bowers and colleagues. As a small synthetic peptide it is structurally distinct from growth hormone-releasing hormone (GHRH) and acts through a separate receptor pathway. In laboratory characterisation it is typically handled as a lyophilised powder and reconstituted for in-vitro assay work.
What does the research investigate?
Pre-clinical and in-vitro research into GHRP-2 has focused on its binding to the growth hormone secretagogue receptor (GHS-R1a) on pituitary somatotroph cells and the downstream signalling (PLC/IP3/Ca²⁺) associated with growth hormone release in animal and cell models. Laboratory studies have also examined GHRP-2 in the context of appetite and food-intake signalling in animal models, IGF-1 pathway modulation, and exploratory work on inflammatory markers in cultured cells. These findings come from cell cultures and animal models only and do not establish safety or efficacy in humans. Always read the primary sources directly.
Purity and quality: what research buyers should check
- ≥99% purity by HPLC — confirm via the batch certificate of analysis (COA).
- Identity confirmed by mass spectrometry against the expected peptide mass.
- Batch numbering that ties each vial to its COA for traceability.
Vexar Lab supplies GHRP-2 as a pack of 10 vials, ≥99% HPLC-verified, batch-numbered, with mass-spec confirmation.
Handling and storage
Standard lyophilised-peptide practice applies. Store sealed vials of lyophilised powder at -20°C and protect from light and moisture. Once reconstituted with an appropriate solvent, keep refrigerated and use within a short working window, avoiding repeated freeze-thaw cycles that can degrade peptide integrity. Allow vials to reach room temperature before opening to limit condensation.
Wholesale supply
Vexar Lab supplies research peptides in packs of 10 vials, £300 minimum order, with bulk pricing on volume, £45 flat worldwide shipping, and optional custom labelling for resellers.
Frequently asked questions
Is GHRP-2 approved for human use?
No. GHRP-2 is supplied strictly for in-vitro laboratory research and is not approved for human consumption or any therapeutic use.
How should purity be verified?
Request the batch certificate of analysis showing ≥99% purity by HPLC and a mass-spectrometry identity confirmation tied to the vial’s batch number.
What does pre-clinical research actually show?
It describes effects observed in cell and animal models — receptor binding and GH-release signalling among them — which are investigational and do not translate to human outcomes.
This guide is provided for informational purposes only. GHRP-2 is sold strictly as a research-only chemical for in-vitro laboratory use and is not for human or veterinary consumption, diagnosis, or treatment.
Related: Growth & IGF research peptides · Lab standards & purity testing · Shop all research peptides · How to buy research peptides wholesale