Claimed effect · GHRP-2

Does GHRP-2 help with body composition?

D
Grade D — no human evidenceNone · effect size: not measurable
Short answerNo human evidence. As of 3 September 2026, only none exist for GHRP-2 for body composition. No controlled trial has tested whether repeated GHRP-2 changes muscle or fat in humans. The physique claims are extrapolation from the acute GH rise.

What the studies show

No controlled trial has tested whether repeated GHRP-2 changes muscle or fat in humans. The physique claims are extrapolation from the acute GH rise.

Animal studies, cell studies, or anecdotes only. This is where almost every viral peptide sits. Promising and proven are different words for a reason.

  1. 1
    Chihara K, et al. A simple diagnostic test using GH-releasing peptide-2 in adult GH deficiency.Eur J Endocrinol, 2007;157:19–2777 healthy + 58 GH-deficient adults; the diagnostic basis.

In context

GHRP-2, or pralmorelin, is a synthetic six-amino-acid growth-hormone-releasing peptide. It reliably and measurably raises growth hormone, and on that basis is approved in Japan as a diagnostic test for growth-hormone deficiency. Like natural ghrelin it also increases appetite in short human studies. What it does not have is any trial showing it builds muscle, burns fat or improves body composition — the uses it is actually sold for. It is banned in sport.

GHRP-2 is approved (diagnostic, japan). Legal status differs by country — see the regulation section or the jurisdiction pages.

Questions

Is GHRP-2 proven to help with body composition?
No. There is no human evidence for it (None); the claim rests on animal or cell studies and LYO grades it D.
What studies are behind the grade?
No controlled trial has tested whether repeated GHRP-2 changes muscle or fat in humans. The physique claims are extrapolation from the acute GH rise.
Is GHRP-2 approved for this?
GHRP-2 is an approved medicine (Approved (diagnostic, Japan)); whether this particular outcome is a licensed indication is stated on the compound page's regulation section.

Other outcomes for GHRP-2

Written and maintained by LYO Research — how pages are written and checked. Reviewed 3 September 2026. Grades count human evidence only; see how LYO grades. Not medical advice. Correct this page →