GHRP-6 was the first synthetic peptide that specifically elicited dose-related growth hormone release in vitro and in vivo (Bowers et al. 1989). Among the GHRPs, GHRP-6 produces the strongest ghrelin-mediated appetite stimulation, which makes it useful for bulking-phase protocols and counterproductive for cutting.
Research-context information only. GHRP-6 is a research peptide on the FDA 503A bulks Category 2 list. Protocols, doses, and reactions reported below come from published research and self-reported community sources. This article reports what has been documented, not what should be done. Consult a licensed physician for personal medical decisions.
The buying problem is similar to GHRP-2 — vendors sometimes mislabel between GHRP-2 (817 Da) and GHRP-6 (872 Da). Mass spec is the reliable distinction.
This guide covers documented per-mg pricing, COA verification, vial size selection, and red flags. For dosing context, see the GHRP-6 dosing guide.
This is not a ranked vendor list — for that, see our Best GHRP-6 Vendors comparison.
Understanding GHRP-6 Pricing
Current Market Pricing (2026)
2mg
$8-20
$4-10/mg
Tolerance testing only
5mg
$15-35
$3-7/mg
Standard short cycles
10mg
$25-55
$2.50-5.50/mg
Standard 100-300mcg×3/day — best all-around
10mg × 5 (kit)
$110-250
$2.20-5/mg
Extended cycles
Cost Per Month at Common Doses
100mcg/day
3mg
$7.50-16.50
100mcg×3/day
9mg
$22.50-49.50
200mcg×3/day
18mg
$45-99
For current vendor-specific pricing, see our Best GHRP-6 Vendors comparison.
Cheapest single-vial option: Ion Peptide's 15% off drops the 5mg vial to $24.65 ($4.93/mg effective) — the lowest effective price we track for buying one vial. Get the code →
How to Verify GHRP-6 Quality
What a COA Should Include
Identity Confirmation
Mass spec confirming 872.44 Da for GHRP-6
Sequence verification — His-D-Trp-Ala-Trp-D-Phe-Lys-NH2
C-terminal amidation confirmed
Purity Testing
HPLC purity at 98%+
Single dominant peak
Contamination Testing
Endotoxin levels
Residual solvent analysis
Heavy metals screening
How to Verify a COA Is Legitimate
Third-party lab — Janoshik, MZ Biolabs, Colmaric most-cited
Verifiable task number
Recent date (within 6 months)
Batch match
872 Da mass confirmation — significantly different mass indicates GHRP-2 (817 Da) or ipamorelin (711 Da)
Red Flags to Avoid
No COA available
Only in-house testing
Prices below $1/mg — likely substituted shorter peptide
No mass spec
Vague "GHRP" labeling
No contact information or cryptocurrency only