Neuropeptide S vs Ipamorelin
Head-to-head comparison of Neuropeptide S (Neuropeptide S) and Ipamorelin (Growth Hormone Secretagogue) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Neuropeptide S | Ipamorelin |
|---|---|---|
| Category | Cognitive Enhancement | Performance |
| Full Name | Neuropeptide S | Growth Hormone Secretagogue |
| Molecular Weight | 2203 Da | 711.85 Da |
| Half-Life | Minutes to <1 hour | ~2 hours |
| Amino Acids | 20 | 5 |
| Typical Dose | Research-only; no validated human dose | 200-300 mcg |
| Route | Intracerebroventricular/Intranasal | SC |
| Purity | ≥98% | — |
| Studies Count | 28 | 156 |
| Research Status | Pre-clinical | Clinical Trials |
Neuropeptide S Benefits
- ✓anxiolysis
- ✓stress resilience
- ✓attention support
- ✓arousal modulation
Ipamorelin Benefits
- ✓Stimulates natural GH release
- ✓Minimal cortisol/prolactin increase
- ✓Improved body composition
- ✓Enhanced recovery and sleep quality
- ✓Anti-aging effects
Neuropeptide S Dosing
0.1-1 nmol i.c.v. in animal studies|intranasal research-only exploration|no established human protocol
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
Neuropeptide S Side Effects
- ⚠sleep disruption
- ⚠headache
- ⚠jitteriness
Ipamorelin Side Effects
- ⚠Common (Mild): Temporary tingling, water retention, increased appetite
- ⚠Rare: Headache, lightheadedness
- ⚠Very Well Tolerated overall
Research Overview
Neuropeptide S
Animal studies suggest NPS can reduce anxiety-like behavior while altering wakefulness and alertness through the NPS receptor system. Human cognitive data are very limited, and it has no approved clinical indication.
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.
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