Cholecystokinin-8 vs Buserelin
Head-to-head comparison of Cholecystokinin-8 (Cholecystokinin (sulfated C-terminal octapeptide, CCK-8)) and Buserelin (Buserelin acetate) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Cholecystokinin-8 | Buserelin |
|---|---|---|
| Category | Endocrine Peptides | Sexual Health |
| Full Name | Cholecystokinin (sulfated C-terminal octapeptide, CCK-8) | Buserelin acetate |
| Molecular Weight | 1143.2 Da | 1239.39 Da |
| Half-Life | 1-2 min | ~50-80 minutes |
| Amino Acids | DY(SO3H)MGWMDF-NH2 | 9 |
| Typical Dose | physiologic low-picomolar-nanomolar range|research-dependent | 200 mcg intranasal 3x daily|0.2-0.5 mg SC daily|depot per protocol |
| Route | endogenous secretion|research IV/SC | Intranasal/Subcutaneous |
| Purity | ≥98% | ≥98% |
| Studies Count | 97 | 450 |
| Research Status | Endogenous | Clinical |
Cholecystokinin-8 Benefits
- ✓gallbladder contraction
- ✓pancreatic enzyme release
- ✓satiety signaling
Buserelin Benefits
- ✓pituitary down-regulation
- ✓cycle synchronization
- ✓ovarian stimulation control
- ✓fertility protocol timing
Cholecystokinin-8 Dosing
physiologic secretion|research-dependent
Buserelin Dosing
200 mcg intranasal 3x daily|0.2-0.5 mg SC daily|depot injection per protocol
Cholecystokinin-8 Side Effects
- ⚠abdominal cramping
- ⚠nausea
- ⚠biliary contraction
Buserelin Side Effects
- ⚠hot flashes
- ⚠headache
- ⚠initial LH/FSH flare
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.
Buserelin
Buserelin has been studied extensively as a GnRH agonist in IVF down-regulation and other reproductive-endocrine protocols. Its use helped establish modern cycle-control approaches in assisted reproduction.
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