GHRP-2 research: studies, doses and safety

A peptide that releases growth hormone and can increase hunger.

Also called: Pralmorelin, KP-102, GPA-748.

Growth hormone secretagogues (ghrelin receptor) · Ghrelin receptor agonist and growth hormone secretagogue.

At least 72 human research papers; some share participants. Small infusion studies found higher food intake at one meal, without testing lasting benefits.

Key studies

  • Japanese adult GH test: A supervised 100 mcg IV test separated severe GH deficiency from healthy responses. (source)
  • GHRP-2 versus GHRH: GHRP-2 released more GH than GHRH; synergy was not demonstrated at these doses. (source)
  • GHRP-2 versus hexarelin: Both peptides stimulated other hormones as well as GH. (source)
  • 100 mcg daily for five days: GH responses weakened over five days and IGF-1 did not rise. (source)
  • Continuous SC infusion for 30 days: Continuous infusion sustained hormone changes; this does not validate intermittent self-injections. (source)
  • Older adults: bolus and infusion: Dose pattern, route and pituitary reserve strongly affected the hormone response. (source)

Related to GHRP-2

Sources

Sources checked: 2026-10-18.

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