DPDPE vs Ziconotide
Head-to-head comparison of DPDPE ([D-Pen2, D-Pen5]-enkephalin) and Ziconotide (ω-Conotoxin MVIIA (ziconotide)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | DPDPE | Ziconotide |
|---|---|---|
| Category | Pain Management | Pain Management |
| Full Name | [D-Pen2, D-Pen5]-enkephalin | ω-Conotoxin MVIIA (ziconotide) |
| Molecular Weight | 645.79 Da | 2639.1 Da |
| Half-Life | 15-60 minutes in plasma | approximately 4.5 hours |
| Amino Acids | 5 | 25 |
| Typical Dose | 0.01-1 ug per animal | 0.5-19.2 mcg/day |
| Route | Intrathecal / intracerebroventricular | Intrathecal |
| Purity | ≥98% | ≥98% |
| Studies Count | 800 | 500 |
| Research Status | Pre-clinical | Approved |
DPDPE Benefits
- ✓delta-opioid selectivity
- ✓improved conformational stability
- ✓analgesic receptor mapping
- ✓useful in chronic pain models
Ziconotide Benefits
- ✓strong non-opioid analgesia
- ✓effective for refractory neuropathic pain
- ✓opioid-sparing option
- ✓intrathecal delivery allows targeted action
DPDPE Dosing
Intrathecal 0.01-1 ug per animal|Intracerebroventricular 0.01-0.5 ug per animal|In vitro 0.1-20 nM
Ziconotide Dosing
start 0.5 mcg/day intrathecal|titrate by 0.5 mcg/day no more than 2 times weekly|max 19.2 mcg/day in labeling
DPDPE Side Effects
- ⚠sedation
- ⚠nausea-like opioid effects
- ⚠tolerance with repeated dosing
Ziconotide Side Effects
- ⚠dizziness
- ⚠confusion
- ⚠ataxia
Research Overview
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.
Ziconotide
Clinical studies and post-marketing data support ziconotide as an analgesic for severe chronic pain that does not respond to conventional therapy. Research focuses on balancing analgesic efficacy with neuropsychiatric tolerability and careful dose titration.
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