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Growth Hormone Secretagogues

GHRP-6

Also known as: Growth Hormone Releasing Peptide-6

GHRP-6 is a synthetic hexapeptide (His-D-Trp-Ala-Trp-D-Phe-Lys-NH2) growth hormone secretagogue and ghrelin receptor agonist. Developed by Bowers and Momany and first described in 1984, it was the first synthetic GHRP characterized and is defined by its pronounced appetite-stimulating effect — the strongest of any clinically studied GHRP. It has never been approved by the FDA or any regulatory agency and remains a research-only compound used off-label in the grey market.

Real-time market data

Pricing for GHRP-6

Live vendor pricing, normalized to $/mg so sizes compare fairly — fused with each seller's Merit trust score and latest independent COA purity. Prices refresh daily.

Independent evidence

COAs for GHRP-6

11 third-party tests across 6 vendors. Each card links to the full report.

All 11 COAs for GHRP-6 →
Measured purity 98.9%–100.0% across 8 COAs
Measured purity over time
Research depth

13 citations indexed for GHRP-6

All research on GHRP-6 →

animal · 2026

Growth Hormone-Releasing Peptide-6 (GHRP-6) Ameliorates Post-Infarct Ventricular Remodeling and Systolic Dysfunction in a Model of Permanent Coronary Ligation

Background/Objective : GHRP-6 is a GH secretagogue hexapeptide with expanding and promising cardioprotective effects.

Study · 2026

Growth hormone releasing peptide-6 (GHRP-6) ameliorates acute lung injury and its subsequent evolvement to interstitial fibrosis

Acute lung injury/acute respiratory distress syndrome is a complex, characterized by acute onset, alveolar damage, and progressive hypoxemia. The subsequent proliferative phase drives to pulmonary fibrosis.

Study · 2026

Growth Hormone-Releasing Peptides: Investigation of Their Secondary Structure, Thermal Stability, and Model Membrane Interactions

Growth hormone-releasing peptides (GHRPs) comprise a group of small synthetic peptides that can effectively influence growth hormone secretion both in humans and animals.

animal · 2026

Effect of intracerebroventricular (ICV) injection of antimicrobial peptide expressed in the body-2 (LEAP-2) and its interaction with cannabinoid and ghrelin systems on food intake in broiler chickens

Liver-expressed antimicrobial peptide 2 (LEAP-2), initially identified as an antimicrobial peptide which endocannabinoid and ghrelin action may occur via changes in Leap2 expression.

animal · 2026

Oral salmon acylated ghrelin increases food intake in common carp (Cyprinus carpio) via ghrelin receptors, likely through sensory nerves rather than systemic absorption

This study clarified the local mechanism of action and assessed the aquaculture potential of orally administered salmon acylated ghrelin (sAG) on feed intake in common carp (Cyprinus carpio).

animal · 2026

Hexarelin promotes the survival of retinal ganglion cells after optic nerve transection

Objective Hexarelin is a growth hormone secretagogue receptor type 1a agonist with a potent anti-apoptotic effect. We studied the neuroprotective effect of hexarelin on the survival of retinal ganglion cells (RGCs) in the retina following optic nerve transection (ONT).