HGH Fragment 176-191 vs Neuropeptide S
Head-to-head comparison of HGH Fragment 176-191 (Human Growth Hormone Fragment 176-191) and Neuropeptide S (Neuropeptide S) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | HGH Fragment 176-191 | Neuropeptide S |
|---|---|---|
| Category | Weight Management | Cognitive Enhancement |
| Full Name | Human Growth Hormone Fragment 176-191 | Neuropeptide S |
| Molecular Weight | 1817.12 g/mol | 2203 Da |
| Half-Life | ~30 minutes | Minutes to <1 hour |
| Amino Acids | 16 | 20 |
| Typical Dose | — | Research-only; no validated human dose |
| Route | — | Intracerebroventricular/Intranasal |
| Purity | >98% | ≥98% |
| Studies Count | 45 | 28 |
| Research Status | Active Research | Pre-clinical |
HGH Fragment 176-191 Benefits
- ✓Targeted fat loss, no blood sugar impact, no IGF-1 elevation, inhibits lipogenesis, stimulates lipolysis, improved body composition
Neuropeptide S Benefits
- ✓anxiolysis
- ✓stress resilience
- ✓attention support
- ✓arousal modulation
HGH Fragment 176-191 Dosing
250-500 mcg subcutaneously 1-2 times daily on empty stomach. 12-16 week cycles typical in research.
Neuropeptide S Dosing
0.1-1 nmol i.c.v. in animal studies|intranasal research-only exploration|no established human protocol
HGH Fragment 176-191 Side Effects
- ⚠Injection site irritation, headache, drowsiness. Does not affect blood sugar, insulin sensitivity, or elevate IGF-1.
Neuropeptide S Side Effects
- ⚠sleep disruption
- ⚠headache
- ⚠jitteriness
Research Overview
HGH Fragment 176-191
This 16-amino-acid fragment specifically targets adipose tissue via beta-3 adrenergic receptors. Works through a GH-receptor-independent pathway, explaining selective fat-loss properties without growth-promoting effects.
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.
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