GHRP-2
Growth hormone Approved · Japan Human trials
Also called Pralmorelin, KP-102
A six-amino-acid synthetic peptide that activates the ghrelin receptor, prompting the pituitary to release growth hormone. Like ghrelin it also increases appetite, and it can raise cortisol and prolactin somewhat, so it is less selective than ipamorelin.
Evidence at a glance
- Evidence
- Human trials — Studied in people
- Status
- An approved medicine in Japan
- Dosing
- A dose has been tested in humans
Also nudges cortisol and prolactin up. Appetite stimulation is strong enough to be unwanted for some.
What studies report
- Reliable growth hormone release in human studies, used diagnostically in Japan
- Increased appetite and food intake
- Rise in IGF-1 with repeated use
How it works
Activates the ghrelin receptor on the pituitary, triggering growth hormone release. It also nudges cortisol and prolactin upward, which is what separates it from the more selective ipamorelin.
Where it acts
Pituitary glandThe library groups this compound under Growth hormone. The diagram shows that target, not every tissue it reaches.
Illustrated
AI-generated subject illustration; not a depiction of the compound or evidence of its effects.
Why people take it
Reasons people seek it out — not a list of proven effects.
In practice Off-label
- Chosen over GHRP-6 when appetite stimulation is unwanted
Reported real-world use, not evidence and not a recommendation.
Dosing
What was tested Evidence
- 100 mcg, intravenousDiagnostic GH stimulation testing (approved use in Japan)→ Reliable GH release
What people report using Not evidence
- 100–200 mcg, up to a few times daily
- Chosen over GHRP-6 when appetite stimulation is unwanted
Reported for reference, not as instruction. Nothing here is a recommendation to take anything, and most of these compounds are not approved for human use.
Status: Approved in Japan as a diagnostic test for growth hormone deficiency. Otherwise a research compound.
- Route
- Subcutaneous injection, from reconstituted lyophilised powder
- Sequence
- D-Ala-D-2-Nal-Ala-Trp-D-Phe-Lys-NH2
- Formula
- C45H55N9O6
- Molecular weight
- 818.0 g/mol
- CAS
- 158861-67-7
- Available as
- 10 mg
Search PubMed for GHRP-2 → We link a live search rather than a fixed citation list, so it stays current and nothing here is a reference we have not checked.
Compared with
Side-by-side pages for the compounds this one is most often confused with or taken alongside.
Educational information only. Nothing here is medical advice, a dosing protocol, or a recommendation to use any compound. Most entries describe substances not approved for human use. Talk to a licensed clinician before acting on anything you read here. How to read these entries.