NPY vs Arginine Vasopressin
Head-to-head comparison of NPY (Neuropeptide Y) and Arginine Vasopressin (8-Arginine Vasopressin) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | NPY | Arginine Vasopressin |
|---|---|---|
| Category | Cognitive Enhancement | Cognitive Enhancement |
| Full Name | Neuropeptide Y | 8-Arginine Vasopressin |
| Molecular Weight | 4272 Da | 1084.23 Da |
| Half-Life | minutes | 10-20 minutes |
| Amino Acids | 36 aa | 9 |
| Typical Dose | 1-10 µg preclinical range | 10-40 IU intranasal research range |
| Route | Intranasal | Intranasal/Subcutaneous |
| Purity | ≥98% | ≥98% |
| Studies Count | 900 | 100 |
| Research Status | Pre-clinical | Clinical |
NPY Benefits
- ✓stress resilience
- ✓hippocampal protection
- ✓memory modulation
- ✓anti-excitotoxic signaling
Arginine Vasopressin Benefits
- ✓memory consolidation
- ✓recall support
- ✓arousal-linked learning
- ✓social cognition
NPY Dosing
0.1-1 nmol ICV in rodents|1-10 µg intranasal in experimental work|acute or repeated stress-model protocols
Arginine Vasopressin Dosing
intranasal research dosing|10-40 IU per dose in studies|single or repeated administration
NPY Side Effects
- ⚠sedation
- ⚠appetite increase
- ⚠blood pressure changes
Arginine Vasopressin Side Effects
- ⚠blood pressure elevation
- ⚠headache
- ⚠hyponatremia
Research Overview
NPY
NPY has been shown in animal studies to protect neurons from excitotoxic injury and to dampen stress-linked cognitive impairment. It is often discussed as a counterbalance to overactive glutamatergic and stress pathways in the brain.
Arginine Vasopressin
Animal and human studies indicate vasopressin can modulate hippocampal and limbic circuits involved in learning and memory. The effect size is context dependent, and results vary by dose, route, and baseline cognitive state.
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