GHRP-6
GHRP-6Early-generation growth-hormone secretagogue.
Also known as: Growth Hormone Releasing Peptide-6
Overview
GHRP-6 is a hexapeptide growth-hormone secretagogue widely referenced in GH-release and appetite research as one of the earliest characterized secretagogues.
A first-generation growth-hormone-releasing peptide (GHRP) that strongly stimulates GH release and notably increases appetite via ghrelin-receptor activation. Frequently studied alongside a GHRH analog for amplified pulses, though it is less selective than ipamorelin.
Binds the ghrelin/GH-secretagogue receptor to stimulate growth-hormone release and increase appetite signaling.
Molecular information
His-D-Trp-Ala-Trp-D-Phe-Lys-NH2A synthetic hexapeptide acting at the ghrelin/GH-secretagogue receptor.
Pharmacokinetics
Illustrative relative-concentration model derived from published pharmacokinetic research. Curve is normalized and provided for educational comparison only — not a dosing schedule.
Research applications
- GH-release research
- Appetite-signaling studies
- Secretagogue-pathway investigations
Research protocols
Protocols summarized from published research models. Provided for scientific reference only — not dosing guidance for human use.
Observed effects timeline
Aggregated observations reported across research literature. Timing and magnitude vary by model and are not a guarantee of outcome.
Acute (per dose)
Sharp GH pulse and marked appetite increase reported within ~30 minutes.
Week 2–4
Cumulative IGF-1 elevation with consistent multi-week dosing reported.
Research compatibility
Describes how compounds are studied alongside one another in the literature. Not a recommendation to co-administer.
Hexarelin
Redundant GHRP activity.
Ipamorelin
Overlapping secretagogue mechanism.
CJC-1295 (no DAC)
GHRH + GHRP synergy studied for amplified pulses.
How to reconstitute
Reconstitute with bacteriostatic water, swirl gently, and refrigerate. Avoid shaking to preserve the peptide.
- 1Allow the vial to reach room temperature (15–20 minutes).
- 2Swab the stopper with alcohol and let it air dry.
- 3Add bacteriostatic water slowly down the vial wall.
- 4Swirl gently until dissolved into a clear solution.
- 5Refrigerate at 2–8 °C and protect from light.
Quality indicators
Uniform white powder
Lyophilized cake should be white to off-white without discoloration.
Clear solution
Reconstitutes to a clear, colorless, particle-free solution.
Cold-chain integrity
Reconstituted solution requires 2–8 °C storage.
Slight clumping
Small clumps that dissolve completely with gentle swirling are acceptable — shipping can cause minor compaction.
Collapsed or melted appearance
Powder that looks collapsed, melted, or stuck to the vial walls may have been exposed to heat in transit.
Cloudy after reconstitution
Persistent cloudiness, particles, or precipitate after gentle mixing can indicate a degraded or contaminated peptide.
Reported observations & safety
Safety signals reported in the research literature. Compiled for scientific awareness — not medical advice.
- Marked appetite increase is a hallmark reported effect (ghrelin activity).
- Transient water retention and mild cortisol/prolactin elevation are reported, more so than with ipamorelin.
References & further reading
GHRP-6 and growth-hormone secretagogue receptor (review)
Review of GHRP-6's GH-releasing and appetite effects via the ghrelin/secretagogue receptor.
View studyTopics
This entry is provided for educational and informational purposes only. It is not medical advice, a dosing protocol, or a claim of therapeutic benefit. Research compounds are supplied strictly for laboratory and research use — not for human or veterinary consumption.
Large body of preclinical and clinical literature.
This compound is part of our educational reference and is not currently stocked. Browse the catalogue for available research-grade peptides.
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