Neuropeptide S vs GPE
Head-to-head comparison of Neuropeptide S (Neuropeptide S) and GPE (Glycyl-L-prolyl-L-glutamic acid) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Neuropeptide S | GPE |
|---|---|---|
| Category | Cognitive Enhancement | Cognitive Enhancement |
| Full Name | Neuropeptide S | Glycyl-L-prolyl-L-glutamic acid |
| Molecular Weight | 2203 Da | 301.30 Da |
| Half-Life | Minutes to <1 hour | minutes |
| Amino Acids | 20 | 3 |
| Typical Dose | Research-only; no validated human dose | 0.1-10 mg/kg preclinical |
| Route | Intracerebroventricular/Intranasal | Intranasal/Intracerebroventricular |
| Purity | ≥98% | ≥98% |
| Studies Count | 28 | 25 |
| Research Status | Pre-clinical | Pre-clinical |
Neuropeptide S Benefits
- ✓anxiolysis
- ✓stress resilience
- ✓attention support
- ✓arousal modulation
GPE Benefits
- ✓memory consolidation
- ✓neuroprotection
- ✓synaptic plasticity
- ✓learning support
Neuropeptide S Dosing
0.1-1 nmol i.c.v. in animal studies|intranasal research-only exploration|no established human protocol
GPE Dosing
intranasal or ICV research doses|0.1-10 mg/kg preclinical range|repeat daily or intermittent protocols
Neuropeptide S Side Effects
- ⚠sleep disruption
- ⚠headache
- ⚠jitteriness
GPE Side Effects
- ⚠limited human safety data
- ⚠short half-life
- ⚠local irritation with nasal delivery
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.
GPE
Preclinical studies suggest GPE can reduce neuronal damage and support plasticity-related pathways in the brain. Research interest centers on hippocampal function, which links it to learning and memory paradigms.
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