Cholecystokinin-8 vs Ipamorelin
Head-to-head comparison of Cholecystokinin-8 (Cholecystokinin (sulfated C-terminal octapeptide, CCK-8)) and Ipamorelin (Growth Hormone Secretagogue) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Cholecystokinin-8 | Ipamorelin |
|---|---|---|
| Category | Endocrine Peptides | Performance |
| Full Name | Cholecystokinin (sulfated C-terminal octapeptide, CCK-8) | Growth Hormone Secretagogue |
| Molecular Weight | 1143.2 Da | 711.85 Da |
| Half-Life | 1-2 min | ~2 hours |
| Amino Acids | DY(SO3H)MGWMDF-NH2 | 5 |
| Typical Dose | physiologic low-picomolar-nanomolar range|research-dependent | 200-300 mcg |
| Route | endogenous secretion|research IV/SC | SC |
| Purity | ≥98% | — |
| Studies Count | 97 | 156 |
| Research Status | Endogenous | Clinical Trials |
Cholecystokinin-8 Benefits
- ✓gallbladder contraction
- ✓pancreatic enzyme release
- ✓satiety signaling
Ipamorelin Benefits
- ✓Stimulates natural GH release
- ✓Minimal cortisol/prolactin increase
- ✓Improved body composition
- ✓Enhanced recovery and sleep quality
- ✓Anti-aging effects
Cholecystokinin-8 Dosing
physiologic secretion|research-dependent
Ipamorelin Dosing
Standard: 200-300 mcg SC 2-3 times daily|Pre-bed: 200 mcg SC 30 min before sleep|Combined: 100-200 mcg with CJC-1295 2-3x daily
Cholecystokinin-8 Side Effects
- ⚠abdominal cramping
- ⚠nausea
- ⚠biliary contraction
Ipamorelin Side Effects
- ⚠Common (Mild): Temporary tingling, water retention, increased appetite
- ⚠Rare: Headache, lightheadedness
- ⚠Very Well Tolerated overall
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.
Ipamorelin
Ipamorelin has moderate clinical evidence. Phase II trials demonstrate selective GH release. Generally regarded as one of the safest GH secretagogues with minimal side effect profile.
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