GHRP-2 vs GHRP-6
Head-to-head comparison of GHRP-2 (Growth Hormone Releasing Peptide-2) and GHRP-6 (Growth Hormone Releasing Peptide-6) — benefits, dosing, side effects, research data, and where to buy.
| Property | GHRP-2 | GHRP-6 |
|---|---|---|
| Category | Performance | Performance |
| Full Name | Growth Hormone Releasing Peptide-2 | Growth Hormone Releasing Peptide-6 |
| Molecular Weight | 817.97 Da | 873.01 Da |
| Half-Life | ~25 minutes | ~15-60 minutes |
| Amino Acids | 6 | 6 |
| Typical Dose | 100-300 mcg | 100-300 mcg |
| Route | SC / IV | SC / IV |
| Purity | — | — |
| Studies Count | 172 | 186 |
| Research Status | Approved (Japan) | Clinical Trials |
GHRP-2 Benefits
- ✓Potent GH release (stronger than GHRP-6)
- ✓Less appetite stimulation than GHRP-6
- ✓Improved body composition
- ✓Enhanced deep sleep quality
- ✓Cytoprotective properties
GHRP-6 Benefits
- ✓Potent GH release stimulation
- ✓Muscle growth and strength
- ✓Appetite stimulation (ghrelin pathway)
- ✓Improved body composition
- ✓Enhanced recovery from training
GHRP-2 Dosing
Standard: 100-300 mcg SC 2-3 times daily|Pre-bed: 100-200 mcg for GH pulse during sleep|Combined: 100 mcg with CJC-1295 for synergy|Cycle: 8-16 weeks, 4 weeks off
GHRP-6 Dosing
Standard: 100-300 mcg SC 2-3 times daily|Pre-workout: 100 mcg 30 min before training|Pre-bed: 100-200 mcg for overnight GH pulse
GHRP-2 Side Effects
- ⚠Common: Mild appetite increase, water retention, tingling
- ⚠Moderate: Cortisol elevation at higher doses
- ⚠Rare: Prolactin increase, transient dizziness
- ⚠Better tolerated than GHRP-6 overall
GHRP-6 Side Effects
- ⚠Common: Increased appetite (significant), water retention, tingling
- ⚠Moderate: Cortisol elevation (dose-dependent), lethargy
- ⚠Rare: Elevated prolactin at high doses
Research Overview
GHRP-2
GHRP-2 has strong clinical evidence. Approved in Japan for diagnostic use. Multiple human studies confirm reliable GH stimulation with a favorable side effect profile compared to GHRP-6.
GHRP-6
GHRP-6 has solid pre-clinical and clinical evidence for GH stimulation. Well-characterized pharmacology. More appetite stimulation than Ipamorelin due to ghrelin receptor activation.
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