GHRP-2 vs Oxytocin
Head-to-head comparison of GHRP-2 (Growth Hormone Releasing Peptide-2) and Oxytocin (Neurohypophysial Hormone Peptide) — benefits, dosing, side effects, research data, and where to buy.
| Property | GHRP-2 | Oxytocin |
|---|---|---|
| Category | Performance | Performance |
| Full Name | Growth Hormone Releasing Peptide-2 | Neurohypophysial Hormone Peptide |
| Molecular Weight | 817.97 Da | 1,007.19 Da |
| Half-Life | ~25 minutes | ~3-5 minutes (plasma) |
| Amino Acids | 6 | 9 |
| Typical Dose | 100-300 mcg | 20-40 IU intranasal |
| Route | SC / IV | Intranasal / IV / IM |
| Purity | — | — |
| Studies Count | 172 | 1850 |
| Research Status | Approved (Japan) | FDA Approved (Pitocin) |
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
Oxytocin Benefits
- ✓Enhances social bonding and trust
- ✓Reduces social anxiety
- ✓Emotional regulation
- ✓Potential autism spectrum benefits
- ✓Stress and anxiety reduction
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
Oxytocin Dosing
Intranasal: 20-40 IU per dose, 1-2 times daily|Social Anxiety: 24 IU intranasal 45 min before social situations|Research: 8-40 IU per administration|Clinical: Per physician protocol
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
Oxytocin Side Effects
- ⚠Common (Intranasal): Nasal irritation, headache, drowsiness
- ⚠Moderate: Uterine contractions (caution in pregnancy)
- ⚠Rare: Water retention at high doses
- ⚠Contraindications: Pregnancy (non-medical), cardiovascular disease
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.
Oxytocin
Oxytocin has extensive research and is one of the most studied hormonal peptides. FDA-approved for obstetric use. Intranasal formulations being studied for autism spectrum disorder, social anxiety, PTSD, and depression. Complex dose-response relationships being elucidated.
Ready to buy?
Find both peptides from our verified, lab-tested vendors with purity certificates and third-party testing.