Secretin vs Kisspeptin-54
Head-to-head comparison of Secretin (Human Secretin) and Kisspeptin-54 (Kisspeptin-54 (metastin), 54-amino-acid KISS1 peptide fragment) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Secretin | Kisspeptin-54 |
|---|---|---|
| Category | Gastrointestinal | Sexual Health |
| Full Name | Human Secretin | Kisspeptin-54 (metastin), 54-amino-acid KISS1 peptide fragment |
| Molecular Weight | 3055.4 Da | 5.9 kDa |
| Half-Life | 5-7 minutes | about 20-30 min |
| Amino Acids | 27 | 54 |
| Typical Dose | 0.2 mcg/kg IV | 0.3-1.0 nmol/kg |
| Route | Intravenous | Intravenous |
| Purity | ≥98% | ≥98% |
| Studies Count | 800 | 110 |
| Research Status | Clinical | Clinical |
Secretin Benefits
- ✓stimulates-pancreatic-secretion
- ✓supports-bicarbonate-release
- ✓aids-duodenal-pH-control
- ✓helps-digestive-coordination
Kisspeptin-54 Benefits
- ✓GnRH/LH stimulation
- ✓supports sex hormone signaling
- ✓may enhance sexual motivation
- ✓fertility-axis modulation
Secretin Dosing
0.2 mcg/kg IV diagnostic dose|research infusion protocols|short bolus administration
Kisspeptin-54 Dosing
0.3-1.0 nmol/kg IV bolus|single-dose experimental protocols|research-only endocrine monitoring
Secretin Side Effects
- ⚠flushing
- ⚠nausea
- ⚠abdominal-cramping
Kisspeptin-54 Side Effects
- ⚠flushing
- ⚠nausea
- ⚠headache
- ⚠hormonal shifts
Research Overview
Secretin
Secretin is a classic GI hormone with extensive physiology literature and established diagnostic use. It remains important for studying pancreatic secretory function, biliary responses, and duodenal feedback.
Kisspeptin-54
Human studies show that kisspeptin-54 can acutely modulate reproductive neuroendocrine signaling, which makes it relevant to libido and sexual motivation research. Its effects are indirect compared with PT-141, but it is a well-established peptide in the scientific literature.
Ready to buy?
Find both peptides from our verified, lab-tested vendors with purity certificates and third-party testing.