GHRP-2 vs GHRP-6
The two workhorse GHRPs — studied side by side for growth-hormone release and the appetite difference that separates them. Here's a neutral, sourced side-by-side — no hype, every claim links to its evidence.
GHRP-2
ResearchAlso: KP-102, Pralmorelin
GHRP-2 is a small chain of amino acids, which are the building blocks of proteins in the body. It falls into a group of chemicals often called growth hormone secretagogues.
GHRP-6
ResearchAlso: GHRP-6 Combination, GHRP 6 & CJC 1295 Peptide Mix
GHRP-6 is a man-made peptide made of six small building blocks. Its full name is Growth Hormone Releasing Peptide-6.
At a Glance
| GHRP-2 | GHRP-6 | |
|---|---|---|
| Research status | Preclinical | Preclinical |
| Highest-tier evidence | Peer-reviewed study | Peer-reviewed study |
| Research citations | 6 | 8 |
| Dosing routes | SubQ | SubQ |
| Receptor targets | GHSR-1a (ghrelin receptor) | GHSR-1a (ghrelin receptor) |
| Half-life | — | — |
| Known side effects | 45 | 8 |
Research Areas
Top preclinical research areas — cited studies for each.
GHRP-2
- Potent GH release
- Diagnostic GH testing
- Appetite stimulation
GHRP-6
- GH release
- Strong appetite stimulation
- Cardioprotection (preclinical)
How People Use It
Reported routines — research only, not medical advice.
GHRP-2
- SubQ — Not specified (determined by professional)
- SubQ — 1 to 2 mcg/kg
GHRP-6
- SubQ — 8 weeks on, 8 weeks off
- SubQ — 100 mcg
- SubQ — 100 mcg
- SubQ — 100 to 150 mcg
- SubQ — 1 mcg/kg
The Evidence
Key studies — click through to verify each on PubMed.
GHRP-2
6 sourced studies
- Source
Growth hormone releasing peptide-2 (GHRP-2), like ghrelin, increases food intake in healthy men
Review2010 Key study 82/100Rated 82/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Pralmorelin: GHRP 2, GPA 748, growth hormone-releasing peptide 2, KP-102 D, KP-102 LN, KP-102D, KP-102LN.
Review2004 80/100Rated 80/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
General pharmacology of KP-102 (GHRP-2), a potent growth hormone-releasing peptide.
2004 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
PubChem - Compound - Pralmorelin
95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →
GHRP-6
8 sourced studies
- Source
GHRP-6 mimics ghrelin-induced stimulation of food intake and suppression of locomotor activity in goldfish.
AnimalStudy2012 Key study 80/100Rated 80/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Central responsiveness to a ghrelin mimetic (GHRP-6) is rapidly altered by acute changes in nutritional status in rats.
ClinicalStudy2005 78/100Rated 78/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Growth hormone-releasing peptide 6 (GHRP-6) hydrogel for acute kidney injury therapy via metabolic regulation.
2025 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Pharmacokinetic study of Growth Hormone-Releasing Peptide 6 (GHRP-6) in nine male healthy volunteers.
2013 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →
Decision Guide
How to Choose
Neither is a “winner” — they suit different goals. Compare the documented benefits and evidence above against what you’re actually trying to achieve, note the research status (approved vs research-stage), and read each full guide before deciding. Many people also stack peptides rather than pick one.
Source GHRP-2
Shop GHRP-2Source GHRP-6