Histatin-5 vs Neuropeptide S
Head-to-head comparison of Histatin-5 (Human histatin 5) and Neuropeptide S (Neuropeptide S) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Histatin-5 | Neuropeptide S |
|---|---|---|
| Category | Dental & Oral | Cognitive Enhancement |
| Full Name | Human histatin 5 | Neuropeptide S |
| Molecular Weight | 3035 Da | 2203 Da |
| Half-Life | minutes in saliva | Minutes to <1 hour |
| Amino Acids | 24 | 20 |
| Typical Dose | 1-100 µM in research formulations | Research-only; no validated human dose |
| Route | Topical/Oral rinse | Intracerebroventricular/Intranasal |
| Purity | ≥98% | ≥98% |
| Studies Count | 120 | 28 |
| Research Status | Pre-clinical | Pre-clinical |
Histatin-5 Benefits
- ✓anti-Candida activity
- ✓biofilm suppression
- ✓mucosal wound support
- ✓oral innate immunity
Neuropeptide S Benefits
- ✓anxiolysis
- ✓stress resilience
- ✓attention support
- ✓arousal modulation
Histatin-5 Dosing
topical rinse or gel|short contact exposure|repeat applications in research protocols
Neuropeptide S Dosing
0.1-1 nmol i.c.v. in animal studies|intranasal research-only exploration|no established human protocol
Histatin-5 Side Effects
- ⚠local irritation
- ⚠proteolytic instability
- ⚠dose-dependent cytotoxicity in vitro
Neuropeptide S Side Effects
- ⚠sleep disruption
- ⚠headache
- ⚠jitteriness
Research Overview
Histatin-5
Histatin-5 is a major salivary defense peptide that can kill Candida species and influence oral microbial communities. It is also investigated for wound-healing and xerostomia-associated oral infection models.
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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