Cholecystokinin-8 vs Calcitonin
Head-to-head comparison of Cholecystokinin-8 (Cholecystokinin (sulfated C-terminal octapeptide, CCK-8)) and Calcitonin (Salmon Calcitonin) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Cholecystokinin-8 | Calcitonin |
|---|---|---|
| Category | Endocrine Peptides | Pain Management |
| Full Name | Cholecystokinin (sulfated C-terminal octapeptide, CCK-8) | Salmon Calcitonin |
| Molecular Weight | 1143.2 Da | 3431.9 Da |
| Half-Life | 1-2 min | about 10-15 minutes |
| Amino Acids | DY(SO3H)MGWMDF-NH2 | 32 |
| Typical Dose | physiologic low-picomolar-nanomolar range|research-dependent | 100 IU/day SC or 200 IU/day intranasal |
| Route | endogenous secretion|research IV/SC | Intranasal/Subcutaneous |
| Purity | ≥98% | ≥98% |
| Studies Count | 97 | 350 |
| Research Status | Endogenous | Approved |
Cholecystokinin-8 Benefits
- ✓gallbladder contraction
- ✓pancreatic enzyme release
- ✓satiety signaling
Calcitonin Benefits
- ✓bone pain relief
- ✓short-term analgesic effect
- ✓may reduce opioid requirement
- ✓useful in osteoporotic fracture pain
Cholecystokinin-8 Dosing
physiologic secretion|research-dependent
Calcitonin Dosing
100 IU subcutaneous daily|200 IU intranasal daily|short-term use in acute pain settings
Cholecystokinin-8 Side Effects
- ⚠abdominal cramping
- ⚠nausea
- ⚠biliary contraction
Calcitonin Side Effects
- ⚠nausea
- ⚠flushing
- ⚠rhinitis
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.
Calcitonin
Calcitonin has been evaluated in randomized trials and reviews for pain associated with vertebral compression fractures and other bone-related conditions. The signal is strongest for short-term analgesia rather than long-term chronic pain control.
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