Peptide library / Hormones & metabolism / GHRP-2
GHRP-2
A growth hormone-releasing peptide approved in Japan only as a diagnostic test.
Effects studied or claimed
What it is used or promoted for, and where each effect has actually been seen
- Diagnosis of growth hormone deficiencyFDA approved
- Muscle and fat changes, promotedLab
How it is thought to work
GHRP-2 activates the ghrelin receptor and triggers a strong pulse of growth hormone from the pituitary.
What the evidence shows
Used in Japan as a one-time stimulation test. There is no good evidence for body composition claims.
Safety and unknowns
Increased hunger, cortisol and prolactin release, and water retention may occur.
Regulatory status
Approved in Japan as a diagnostic only. Not approved in the United States.
Regulatory status changes quickly. This entry was last reviewed on 27 October 2026. Confirm current status with the FDA before relying on it.
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General information, not medical advice. Do not buy or inject unregulated peptides.