This page is provided for research and educational purposes only and does not provide medical advice, diagnosis, treatment recommendations, dosing instructions, or instructions for human use. Research findings should be interpreted within the population, model, formulation, route, outcomes, and study design reported by each cited source.
GHRP-2 (10 mg Vial)
GHRP-2 (pralmorelin) is a synthetic hexapeptide that potently stimulates growth hormone release by activating ghrelin receptors in the pituitary and hypothalamus[1][2]. It has been used in clinical research as a diagnostic GH stimulant and in investigative treatment protocols for growth hormone deficiency[3].
Quick Reference
What is GHRP-2?
Research overview based on the cited scientific literature.
• Goal: Stimulate pulsatile growth hormone release and elevate IGF-1 levels over time[5].
• Storage: Lyophilized frozen; reconstituted refrigerated; use within ~4 weeks after reconstitution[8].
Storage Instructions
Proper storage preserves peptide quality[8].
• Lyophilized: Store at −20 °C (−4 °F) in dry, dark conditions; stable for 1+ years frozen.
• Reconstituted: Refrigerate at 2–8 °C (35.6–46.4 °F); use within ~4 weeks; avoid freeze–thaw.
• Allow vials to reach room temperature before opening to reduce condensation uptake.
• Use bacteriostatic water (0.9% benzyl alcohol) for multi-dose reconstitution[9].
How is GHRP-2 studied?
GHRP-2 is a growth hormone-releasing peptide that acts as a ghrelin receptor agonist (GHS-R1a)[1]. By binding to receptors in both the pituitary and hypothalamus, it triggers robust, pulsatile GH release that mimics natural secretion patterns[2]. Clinical studies have demonstrated that even a single 100 mcg subcutaneous dose can raise GH levels several-fold above baseline[4]. When administered consistently, GHRP-2 can elevate IGF-1 levels over weeks to months[5]. However, the GH response may attenuate with continuous daily use (tachyphylaxis), which is why titration strategies and periodic breaks are often incorporated[4][7].
What does the research report about GHRP-2?
Observations from preclinical and clinical literature.
Potential Benefits
• Potent stimulation of endogenous GH release without suppressing natural production[1].
• Elevation of IGF-1 levels with sustained administration (~50% increase reported in some studies)[5].
• Used clinically as a diagnostic tool for GH deficiency evaluation[3].
• May support recovery, body composition, and sleep quality (anecdotally reported).
Potential Side Effects
• Increased appetite (ghrelin-mimetic action) — especially pronounced shortly after injection[1].
• Transient flushing, warmth, or tingling at injection site.
• Possible mild increases in cortisol and prolactin at higher doses[6].
• Water retention or joint stiffness with prolonged high-dose use.
• Response attenuation (tachyphylaxis) with continuous daily dosing[4].
Research Limitations / Risk Notes
Published human research tested once-daily subcutaneous GHRP-2 over five days and documented response attenuation[4]. Treat the multiple-daily approach as a research calculation model, not as a schedule established by that study. Response attenuation (tachyphylaxis) may occur with continuous daily dosing[4][7].
Important Note
This content is provided for scientific research and educational purposes only. It does not provide medical advice, diagnosis, treatment, dosing, or administration instructions. The compounds discussed may be investigational and are not presented as approved for human use.