GHRP-6 (2mg)
GHRP-6 (Growth Hormone-Releasing Peptide 6) is a synthetic hexapeptide that acts as a potent growth hormone secretagogue by binding to the ghrelin receptor (GHS-R1a). It stimulates pulsatile GH release from the pituitary gland while preserving physiological feedback controls, leading to increased IGF-1 levels and potential anabolic benefits. This protocol outlines a three times daily subcutaneous approach.
Reviewed by the AllPeptides.eu Editorial Team·Last reviewed: 2026-06-16
Educational information. Not medical advice, and no efficacy claim is implied. Regulatory approval is not a use recommendation by AllPeptides.eu.
⚠️ For informational/educational purposes only. Not medical advice. We do not sell any products. Self-treatment carries serious risks — consult a healthcare professional. Disclaimer
Research monograph
See the full GHRP-6 encyclopedia page with mechanism, evidence tier, related variants and research context.
How It Works
GHRP-6 acts as a synthetic ghrelin mimetic by binding to the growth hormone secretagogue receptor (GHS-R1a) in the pituitary gland and hypothalamus. This activation triggers an acute, pulsatile release of growth hormone from somatotroph cells while simultaneously reducing the inhibitory brake of somatostatin on GH secretion. Unlike continuous GH administration, GHRP-6 preserves physiological feedback controls. Beyond its endocrine effects, it exhibits cytoprotective properties through interactions with the CD36 receptor on immune and muscle cells.
Quick Start
- Reconstitution: Add 3.0 mL bacteriostatic water → ~0.67 mg/mL concentration.
- Typical daily range: 300–900 mcg total (3 doses with gradual titration).
- Storage: Lyophilized: freezer −20 °C; after reconstitution, refrigerator 2–8 °C; use within 7 days.
Standard / Graduated Approach (3 mL = ~0.67 mg/mL)
Route: Subcutaneously | Frequency: Three times daily
| Week | Dose | Units (per injection) |
|---|---|---|
| Weeks 1–2 | 100 mcg/injection | 15 Units (0.15 mL) |
| Weeks 3–4 | 200 mcg/injection | 30 Units (0.30 mL) |
| Weeks 5–12 | 300 mcg/injection | 45 Units (0.45 mL) |
Studies report administration three times daily subcutaneously, with at least 4 hours in between (morning, midday, pre-bed). GHRP-6 has a half-life of ~2.5 hours; each injection should be on an empty stomach (2–3 hours after food, 30 minutes before eating).
Related compounds
Reconstitution Steps
- Draw up 3.0 mL bacteriostatic water.
- Inject slowly down the side; avoid foaming (do not shake).
- Swirl/roll gently until fully dissolved.
- Note the date and refrigerate at 2–8 °C; use within 7 days.
Protocol Overview
- Goal: Stimulate pulsatile GH release for muscle growth, fat loss, and recovery.
- Schedule: 3 subcutaneous injections daily for 8–12 weeks, at least 4 hours apart.
- Storage: Lyophilized frozen; reconstituted refrigerated; use within 7 days.
Dosing Protocol
- Start: 100 mcg/injection, 3× daily (300 mcg total) for Wks 1–2.
- Increase: 200 mcg/injection, 3× daily (600 mcg total) for Wks 3–4.
- Target: 300 mcg/injection, 3× daily (900 mcg total) for Wks 5–12.
- Timing: On an empty stomach; at least 4 hours apart; 30 minutes before eating.
- Break between cycles: Post-cycle, a washout of 4–6 weeks is recommended. GHRP-6 increases cortisol/prolactin—the washout restores hormonal balance.
Washout & Cycle Restart
When can I restart?
Post-cycle, a washout of 4–6 weeks is recommended. GHRP-6 increases cortisol/prolactin—the washout restores hormonal balance.
Minimum wait period: 4 weeks
Storage Instructions
- Lyophilized: Store at −20 °C in dry, dark conditions.
- Reconstituted: Refrigerate 2–8 °C; use within 7 days.
- Avoid freeze-thaw cycles; do not re-freeze reconstituted solution.
Important Notes
- GHRP-6 may increase appetite due to its ghrelin-mimetic properties.
- Log daily doses, timing, and sites.
Potential Benefits & Side Effects
Potential Benefits:
- Muscle Growth & Fat Loss: Increased GH and IGF-1 levels support lean body mass.
- Enhanced Recovery: Improved sleep architecture (increased slow-wave sleep).
- Appetite Stimulation: Can increase hunger due to ghrelin receptor activation.
- Tissue Protection: Cytoprotective effects: cardioprotection, neuroprotection, anti-fibrotic.
Potential Side Effects:
- Transient mild increases in cortisol and ACTH (typically not clinically significant).
- Increased appetite and potential water retention.
- Occasional injection site reactions (redness, itching).
- Generally well-tolerated in human trials.
⚠️ Serious Warnings & Long-Term Risks
The following warnings are based on published literature, FDA labels, and post-marketing surveillance. They do not constitute medical advice. Consult a healthcare professional.
Increased cortisol, prolactin & ghrelin
GHRP-6 significantly increases ghrelin (intense hunger), cortisol, and prolactin. May affect glycemic control and reproductive function.
📄 Eur J Endocrinol 1998References
- Eur J Endocrinol (1997) — Growth hormone-releasing peptides: review of GHRP mechanisms
View Source - Clin Med Insights Cardiol (2017) — Synthetic GHRPs: cytoprotective effects and mechanisms
View Source - Eur J Pharm Sci (2013) — Pharmacokinetic study of GHRP-6 in healthy volunteers
View Source - Sex Med Rev (2018) — Safety and efficacy of growth hormone secretagogues
View Source - Int Wound J (2018) — GHRP-6 prevents dermal hypertrophic scarring
View Source
Recommended Supplements
L-Arginine + L-Ornithine
ZMA (Zinc + Magnesium + B6)
External Sources & Regulatory Status
Regulatory Approvals
Research-only — No regulatory approval
Educational information. Not medical advice, and no efficacy claim is implied. Regulatory approval is not a use recommendation by AllPeptides.eu.
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