Cholecystokinin-8 vs Arginine Vasopressin
Head-to-head comparison of Cholecystokinin-8 (Cholecystokinin (sulfated C-terminal octapeptide, CCK-8)) and Arginine Vasopressin (8-Arginine Vasopressin) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Cholecystokinin-8 | Arginine Vasopressin |
|---|---|---|
| Category | Endocrine Peptides | Cognitive Enhancement |
| Full Name | Cholecystokinin (sulfated C-terminal octapeptide, CCK-8) | 8-Arginine Vasopressin |
| Molecular Weight | 1143.2 Da | 1084.23 Da |
| Half-Life | 1-2 min | 10-20 minutes |
| Amino Acids | DY(SO3H)MGWMDF-NH2 | 9 |
| Typical Dose | physiologic low-picomolar-nanomolar range|research-dependent | 10-40 IU intranasal research range |
| Route | endogenous secretion|research IV/SC | Intranasal/Subcutaneous |
| Purity | ≥98% | ≥98% |
| Studies Count | 97 | 100 |
| Research Status | Endogenous | Clinical |
Cholecystokinin-8 Benefits
- ✓gallbladder contraction
- ✓pancreatic enzyme release
- ✓satiety signaling
Arginine Vasopressin Benefits
- ✓memory consolidation
- ✓recall support
- ✓arousal-linked learning
- ✓social cognition
Cholecystokinin-8 Dosing
physiologic secretion|research-dependent
Arginine Vasopressin Dosing
intranasal research dosing|10-40 IU per dose in studies|single or repeated administration
Cholecystokinin-8 Side Effects
- ⚠abdominal cramping
- ⚠nausea
- ⚠biliary contraction
Arginine Vasopressin Side Effects
- ⚠blood pressure elevation
- ⚠headache
- ⚠hyponatremia
Research Overview
Cholecystokinin-8
CCK-8 is a canonical gut hormone fragment with extensive documentation in digestive physiology and appetite control. Sulfation of the tyrosine residue is important for high-affinity receptor activity.
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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