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GHRP-2 Complete Pharmacology: GH Release, Appetite, Cardiovascular, and Clinical Applications

RPEP-009052004Doi, Naomi; Hirotani, Chiharu; Ukai, Kiyoharu; Shimada, Osafumi; Okuno, Tadashi; Kurasaki, Shigeru; Kiyofuji, Takeshi; Ikegami, Reiko; Futamata, Machiko; Nakagawa, Terutake; Ase, Katsuhiko; Chihara, Kazuo
Animal StudyModerate evidence
The takeaway

This comprehensive pharmacological review of GHRP-2 (KP-102/pralmorelin) covers its potent GH-releasing activity, appetite stimulation, cardiovascular effects, receptor pharmacology, and clinical applications across GH deficiency and diagnostic testing.

Gold standard GHS

GHRP-2 is one of the most potent and comprehensively characterized GH secretagogues — the benchmark for the field

What the researchers found

GHRP-2 (KP-102/pralmorelin) demonstrates potent GH-releasing activity through dual hypothalamic-pituitary mechanisms, with characterized appetite, cardiovascular, and diagnostic applications — a comprehensive pharmacological profile.

Why it matters

GHRP-2 is one of the most widely used GH secretagogues in research and clinical testing. This definitive pharmacological reference is essential for anyone working with this compound.

How the study worked

Comprehensive pharmacological review covering GHRP-2 receptor binding, in-vitro/in-vivo GH-releasing activity, appetite effects, cardiovascular properties, and clinical trial data.

What this study cannot tell us

Review from 2004. Some clinical applications were still in development.

How to read the evidence

Moderate evidence from a comprehensive pharmacological review covering extensive preclinical and clinical data.

When this study was published

Published in 2004. GHRP-2 (pralmorelin) is approved for diagnostic GH testing in some countries and widely used in research.

The bigger picture

GHRP-2 represents the gold standard peptide GH secretagogue. Its comprehensive pharmacological characterization serves as the benchmark against which other GH peptides are compared.

Questions still open

  • Is GHRP-2 the most potent available GH secretagogue?
  • How does it compare to ipamorelin for selectivity?
  • Should GHRP-2 be the reference standard for GH secretagogue comparison?

Common questions

What is GHRP-2?
One of the most potent synthetic growth hormone-releasing peptides, also known as KP-102 or pralmorelin. It stimulates GH release through both brain and pituitary mechanisms and is used for GH deficiency diagnosis.
How does it compare to other GH peptides?
GHRP-2 is among the most potent GH releasers but is less selective than ipamorelin (which avoids cortisol/prolactin increases). It's the benchmark against which other GH secretagogues are measured.

Read the original research

Pharmacological characteristics of KP-102 (GHRP-2), a potent growth hormone-releasing peptide.

Arzneimittel-Forschung, 54(12), 857-67

View on PubMed ↗

Citation

Doi, Naomi; Hirotani, Chiharu; Ukai, Kiyoharu; Shimada, Osafumi; Okuno, Tadashi; Kurasaki, Shigeru; Kiyofuji, Takeshi; Ikegami, Reiko; Futamata, Machiko; Nakagawa, Terutake; Ase, Katsuhiko; Chihara, Kazuo. (2004). Pharmacological characteristics of KP-102 (GHRP-2), a potent growth hormone-releasing peptide.. Arzneimittel-Forschung, 54(12), 857-67.