GHRP-6 — Vendor Pricing & Purity Guide
Research Overview
GHRP-6 (Growth Hormone Releasing Peptide-6) is a synthetic hexapeptide that stimulates growth hormone release by activating the ghrelin/GHS-R1a receptor in the pituitary gland. It was one of the first growth hormone secretagogues discovered and has been extensively studied since the 1980s. GHRP-6 is considered the prototypical GHRP against which newer secretagogues are compared.
GHRP-6 produces a strong, dose-dependent GH pulse through the ghrelin receptor pathway — the same receptor that endogenous ghrelin activates. Because this is distinct from the GHRH receptor pathway, GHRP-6 produces synergistic effects when combined with GHRH analogs like CJC-1295 or Sermorelin. However, unlike the more selective Ipamorelin, GHRP-6 also significantly activates hunger signaling and can elevate cortisol and prolactin at higher doses.
The appetite-stimulating effect of GHRP-6 is one of its most notable characteristics — it produces intense hunger within 20 minutes of administration. This has made it useful in research on appetite disorders and cachexia, but less desirable for body composition research where appetite control is important.
Key Research Findings
- •Produced dose-dependent GH release comparable to GHRH in healthy subjects (Bowers et al., 1991)
- •Synergistic GH elevation (3-5x) when combined with GHRH analogs vs either agent alone
- •Potent appetite stimulation through ghrelin receptor activation — useful for cachexia/wasting research
- •Elevated cortisol and prolactin at doses above 1 mcg/kg, unlike the more selective Ipamorelin
- •Demonstrated gastroprotective effects similar to ghrelin in gastric injury models
- •Extensively characterized pharmacokinetics and safety profile spanning 30+ years of research
Research Dosage Protocols
GHRP-6 is supplied as lyophilized powder reconstituted with bacteriostatic water. It is administered via subcutaneous or intravenous injection in research protocols.
Published human studies have used doses of 1-2 mcg/kg body weight. The GH response peaks approximately 15-30 minutes after administration and returns to baseline within 2-3 hours.
GHRP-6 is most commonly studied in combination with GHRH analogs. Timing is typically on an empty stomach, as food intake (especially carbohydrates and fats) can blunt GH release. Researchers should note the significant appetite stimulation that occurs within 20 minutes of administration.
For research reference only. Not medical advice. Not for human consumption.
Published Research (1 studies)
- [1]
Links go to PubMed (NIH National Library of Medicine). PeptideVerdict is not affiliated with these studies.
Price Comparison (11 products from 8 vendors)
| Vendor | Price | Stock |
|---|---|---|
| Biotech Peptides | $39.00 $3.90/mg 10mg vial | In Stock |
| Swiss Chems | $19.95 $3.99/mg 5mg vial | In Stock |
| Core Peptides | $20.00 $4.00/mg 5mg vial | In Stock |
| Biotech Peptides | $21.00 $4.20/mg 5mg vial | In Stock |
| Peptide Sciences | $50.00 $5.00/mg 10mg lyophilized | In Stock |
| Paradigm Peptides | $25.00 $5.00/mg 5mg lyophilized | In Stock |
| Particle Peptides | $25.99 $5.20/mg 5mg lyophilized | In Stock |
| Peptide Sciences | $36.00 $7.20/mg 5mg lyophilized | In Stock |
| Peptide Sciences | $95.00 $9.50/mg 10mg lyophilized | In Stock |
| Soma Chems | $19.99 vial | In Stock |
| Simple Peptide | $39.00 lyophilized | In Stock |
Frequently Asked Questions
What is GHRP-6?
GHRP-6 is a hexapeptide growth hormone secretagogue that stimulates GH release through the ghrelin receptor. It was one of the first GHRPs discovered and has over 30 years of research data.
How does GHRP-6 compare to Ipamorelin?
Both stimulate GH via the ghrelin receptor, but GHRP-6 is less selective. It significantly increases appetite, and at higher doses can elevate cortisol and prolactin. Ipamorelin produces comparable GH release without these off-target effects, making it the preferred GHRP for most research.
Why does GHRP-6 make you hungry?
GHRP-6 activates the same receptor as ghrelin, the body's primary hunger hormone. This triggers strong appetite signaling through hypothalamic pathways. The effect is dose-dependent and typically peaks within 20 minutes.
Where can I buy GHRP-6 for research?
GHRP-6 is available from most research peptide vendors. Compare pricing in the table above.