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GHRP-2 vs GHRP-6

Mechanism, half-life, dosing & research status compared side-by-side.

GHRP-2
Growth Hormone
Not Approved (US)
Growth HormoneBody CompositionRecovery
GHRP-2 (Pralmorelin) is a synthetic hexapeptide growth hormone releasing peptide and one of the most potent first-generation GHRPs. It stimulates pituitary GH secretion via the ghrelin receptor (GHSR-1a) with greater pot…
Full GHRP-2 profile →
GHRP-6
Growth Hormone
Not Approved
Growth HormoneWound HealingRecovery
GHRP-6 is the original growth hormone releasing peptide, discovered by Cyril Bowers in the 1970s through systematic study of enkephalin analogs. It was the first molecule to reveal the existence of the ghrelin receptor p…
Full GHRP-6 profile →
Technical Specs Comparison
MetricGHRP-2GHRP-6
Research Status Extensively Studied Extensively Studied
Molecular Weight 817.9 Da 873.0 Da
Half-Life ~30–60 min ~15–60 min
Peak Time ~30–45 min ~30 min
Typical Dose 100–300 µg 100–300 µg
Frequency 1–3× daily 2–3× daily
Route Subcutaneous Subcutaneous
Amino Acids 6 6
WADA Status Prohibited Prohibited
FDA Status Not Approved (US) Not Approved
Stack Compatibility & Key Differences
Both are active research compounds. See individual pages for full protocol data.
Frequently Asked Questions
What is the difference between GHRP-2 and GHRP-6?
GHRP-2: GHRP-2 (Pralmorelin) is a synthetic hexapeptide growth hormone releasing peptide and one of the most potent first-generation GHRPs. It stimulates pituitary GH secretion via the ghrelin receptor (GHSR-1a) with greater pot… GHRP-6: GHRP-6 is the original growth hormone releasing peptide, discovered by Cyril Bowers in the 1970s through systematic study of enkephalin analogs. It was the first molecule to reveal the existence of the ghrelin receptor p…
Can you stack GHRP-2 and GHRP-6?
Both are active research compounds. See individual pages for full protocol data.
Which has a longer half-life, GHRP-2 or GHRP-6?
GHRP-2 half-life: ~30–60 min. GHRP-6 half-life: ~15–60 min.
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Verified Scientific Data
All specifications on this page are sourced from peer-reviewed literature and primary research. Half-life values, dosing ranges, and mechanism data are cross-referenced against published studies. Last audited 2026-07-21.
● Peer-reviewed sources ● Audit timestamp: 2026-07-21 ● Data version: ASCEND Wiki 2026
Data sourced from ASCEND Wiki · GHRP-2 profile · GHRP-6 profile · All comparisons
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