Ipamorelin vs GHRP-6
Two ghrelin-mimetic GHRPs: the selective one studied for clean growth-hormone pulses vs the older, stronger-appetite original. Here's a neutral, sourced side-by-side — no hype, every claim links to its evidence.
Ipamorelin
ResearchAlso: GHRP, Ipamorelin and CJC-1295
Ipamorelin is a small lab-made protein piece, made of just five building blocks. Scientists study it in laboratories to learn how the body releases its own growth chemical.
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
| Ipamorelin | GHRP-6 | |
|---|---|---|
| Research status | Preclinical | Preclinical |
| Highest-tier evidence | Peer-reviewed study | Peer-reviewed study |
| Research citations | 8 | 8 |
| Dosing routes | — | SubQ |
| Receptor targets | GHS-R (ghrelin receptor) | GHSR-1a (ghrelin receptor) |
| Half-life | — | — |
| Known side effects | 8 | 8 |
Research Areas
Top preclinical research areas — cited studies for each.
Ipamorelin
- Stimulates GH release
- Selective (minimal cortisol)
GHRP-6
- GH release
- Strong appetite stimulation
- Cardioprotection (preclinical)
How People Use It
Reported routines — research only, not medical advice.
Ipamorelin
- — 100–250 mcg once daily SC (research: 100–300 mcg 2–3×/day)
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.
Ipamorelin
8 sourced studies
- Source
Ipamorelin, the first selective growth hormone secretagogue.
AnimalStudy1998 Key study 84/100Rated 84/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Ipamorelin for post-operative ileus (NCT00672074)
Registry2014 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
Pharmacokinetic-pharmacodynamic modeling of ipamorelin, a growth hormone releasing peptide, in human volunteers.
1999 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
Ipamorelin, a new growth-hormone-releasing peptide, induces longitudinal bone growth in rats.
1999 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 Ipamorelin
Shop IpamorelinSource GHRP-6