Secretin vs DPDPE
Head-to-head comparison of Secretin (Human Secretin) and DPDPE ([D-Pen2, D-Pen5]-enkephalin) — benefits, dosing, side effects, research data, and where to buy.
| Property | Secretin | DPDPE |
|---|---|---|
| Category | Gastrointestinal | Pain Management |
| Full Name | Human Secretin | [D-Pen2, D-Pen5]-enkephalin |
| Molecular Weight | 3055.4 Da | 645.79 Da |
| Half-Life | 5-7 minutes | 15-60 minutes in plasma |
| Amino Acids | 27 | 5 |
| Typical Dose | 0.2 mcg/kg IV | 0.01-1 ug per animal |
| Route | Intravenous | Intrathecal / intracerebroventricular |
| Purity | ≥98% | ≥98% |
| Studies Count | 800 | 800 |
| Research Status | Clinical | Pre-clinical |
Secretin Benefits
- ✓stimulates-pancreatic-secretion
- ✓supports-bicarbonate-release
- ✓aids-duodenal-pH-control
- ✓helps-digestive-coordination
DPDPE Benefits
- ✓delta-opioid selectivity
- ✓improved conformational stability
- ✓analgesic receptor mapping
- ✓useful in chronic pain models
Secretin Dosing
0.2 mcg/kg IV diagnostic dose|research infusion protocols|short bolus administration
DPDPE Dosing
Intrathecal 0.01-1 ug per animal|Intracerebroventricular 0.01-0.5 ug per animal|In vitro 0.1-20 nM
Secretin Side Effects
- ⚠flushing
- ⚠nausea
- ⚠abdominal-cramping
DPDPE Side Effects
- ⚠sedation
- ⚠nausea-like opioid effects
- ⚠tolerance with repeated dosing
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.
DPDPE
DPDPE is widely cited in opioid pharmacology because it helped establish the functional role of delta-opioid receptors in pain control. Its constrained structure is also used to explore how peptide cyclization changes potency, stability, and tissue selectivity.
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