Ipamorelin vs GHRP-2
Head-to-head comparison of Ipamorelin (Growth Hormone Secretagogue) and GHRP-2 (Growth Hormone Releasing Peptide-2) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Ipamorelin | GHRP-2 |
|---|---|---|
| Category | Performance | Performance |
| Full Name | Growth Hormone Secretagogue | Growth Hormone Releasing Peptide-2 |
| Molecular Weight | 711.85 Da | 817.97 Da |
| Half-Life | ~2 hours | ~25 minutes |
| Amino Acids | 5 | 6 |
| Typical Dose | 200-300 mcg | 100-300 mcg |
| Route | SC | SC / IV |
| Purity | — | — |
| Studies Count | 156 | 172 |
| Research Status | Clinical Trials | Approved (Japan) |
Ipamorelin Benefits
- ✓Stimulates natural GH release
- ✓Minimal cortisol/prolactin increase
- ✓Improved body composition
- ✓Enhanced recovery and sleep quality
- ✓Anti-aging effects
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
Ipamorelin Dosing
Standard: 200-300 mcg SC 2-3 times daily|Pre-bed: 200 mcg SC 30 min before sleep|Combined: 100-200 mcg with CJC-1295 2-3x daily
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
Ipamorelin Side Effects
- ⚠Common (Mild): Temporary tingling, water retention, increased appetite
- ⚠Rare: Headache, lightheadedness
- ⚠Very Well Tolerated overall
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
Research Overview
Ipamorelin
Ipamorelin has moderate clinical evidence. Phase II trials demonstrate selective GH release. Generally regarded as one of the safest GH secretagogues with minimal side effect profile.
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.
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