GHRP-2
Solid track record in animal research with consistent, measurable effects on growth hormone levels. Limited human data means most conclusions still rely on rodent studies, but the existing evidence is encouraging.
Popular in muscle wasting research, aging studies, and investigations into growth hormone's role in tissue repair and metabolism.
Since Feb 2026
30 total, 2 human
What is GHRP-2?
Among the growth hormone releasing peptides developed in the 1990s, GHRP-2 stands out for its reliability in triggering substantial GH pulses. Researchers gravitate toward this particular secretagogue because it produces more predictable results than many of its analogs. It's become a go-to compound for studies examining growth hormone's effects on muscle physiology and metabolic processes.
GHRP-2 binds to ghrelin receptors in the pituitary gland, essentially mimicking the hunger hormone's ability to trigger growth hormone release. Think of it as pressing a biological 'release button' that causes the pituitary to dump stored growth hormone into circulation. Unlike natural ghrelin, which comes and goes with meal timing, GHRP-2 provides researchers with precise control over when and how much GH gets released.
What the Research Shows
30 studies provide a decent foundation, but with only 2 human trials, most evidence comes from animal models.
Notable Studies
Van den Berghe G, Baxter RC, Weekers F et al. · Clin Endocrinol (Oxf) (2002)
RCT · n=335 · days
Wideman L, Weltman JY, Patrie JT et al. · Am J Physiol Regul Integr Comp Physiol (2000)
RCT · n=18
Pihoker C, Kearns GL, French D et al. · J Clin Endocrinol Metab (1998)
RCT · Phase 1 · n=10 · 2 hours
Seki Y, Ichihara A · PLoS One (2022)
Cohort · n=104
Kinoshita Y, Tominaga A, Usui S et al. · Endocr J (2013)
Cohort · n=71
Reported Benefits
Regulatory Status
Last verified: Feb 2026
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This information is for research purposes only and does not constitute medical advice. Always consult a licensed physician before using any peptides.