GHRP-2 (Growth Hormone Releasing Peptide-2) is one of the most potent growth hormone secretagogues available in peptide research. As a synthetic ghrelin mimetic, it produces powerful GH release through the ghrelin receptor pathway, making it a critical tool for studying growth hormone physiology and metabolic function.
What is GHRP-2?
GHRP-2 (pralmorelin) is a synthetic hexapeptide developed in the 1990s as a potent growth hormone secretagogue. It was one of the first GHRPs demonstrated to reliably stimulate GH release in clinical trials. As a ghrelin receptor (GHS-R1a) agonist, it triggers GH release through a mechanism entirely separate from GHRH.
Mechanism of Action
- Ghrelin Receptor Activation: Binds GHS-R1a receptors, directly stimulating GH secretion
- Somatostatin Antagonism: Blocks somatostatin's inhibitory effect on GH release
- GHRH Synergy: When combined with GHRH analogs like Sermorelin, produces synergistic GH release far exceeding either pathway alone
GHRP-2 vs. GHRP-6
GHRP-2 is slightly more potent for GH release per unit dose than GHRP-6, with minimal appetite-stimulating effects. GHRP-6 has stronger orexigenic (appetite) properties. Both have moderate effects on cortisol and prolactin at higher doses. GHRP-2 is preferred when appetite stimulation is not desired.
Research Applications
Growth Hormone Deficiency
GHRP-2 has been used extensively as a diagnostic tool for GH deficiency assessment due to its reliable GH stimulation.
Metabolic Studies
Research examining effects on lipid metabolism, glucose regulation, and energy expenditure through GH-mediated pathways.
Combination Research
Available as standalone and in Sermorelin + GHRP-2 blend for dual-pathway research protocols.
Conclusion
GHRP-2 remains a fundamental tool in growth hormone research. Its potent, reliable GH stimulation with minimal appetite effects makes it ideal for studies focused on isolated GH outcomes in metabolic and endocrine research.
Source Research-Grade GHRP-2 Acetate
AltPeptide offers GHRP-2 Acetate in multiple research-grade formulations. All products are third-party assayed, lyophilized for stability, and shipped with DDP worldwide delivery.
All compounds are sold for laboratory research purposes only. Not for human or animal consumption.
All compounds mentioned are sold for in-vitro laboratory research only. Not for human or animal consumption. Not approved by FDA or any regulator for therapeutic use. This article is for educational and informational purposes only.