DPDPE vs Insulin Lispro
Head-to-head comparison of DPDPE ([D-Pen2, D-Pen5]-enkephalin) and Insulin Lispro (Insulin lispro (B28-Lys, B29-Pro human insulin analog)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | DPDPE | Insulin Lispro |
|---|---|---|
| Category | Pain Management | Diabetes & Metabolic |
| Full Name | [D-Pen2, D-Pen5]-enkephalin | Insulin lispro (B28-Lys, B29-Pro human insulin analog) |
| Molecular Weight | 645.79 Da | 5808.0 Da |
| Half-Life | 15-60 minutes in plasma | About 1 hour |
| Amino Acids | 5 | 51 |
| Typical Dose | 0.01-1 ug per animal | 0.05-0.2 U/kg per meal |
| Route | Intrathecal / intracerebroventricular | Subcutaneous |
| Purity | ≥98% | ≥98% |
| Studies Count | 800 | 12000 |
| Research Status | Pre-clinical | Approved |
DPDPE Benefits
- ✓delta-opioid selectivity
- ✓improved conformational stability
- ✓analgesic receptor mapping
- ✓useful in chronic pain models
Insulin Lispro Benefits
- ✓Rapid postprandial glucose control
- ✓Flexible premeal timing
- ✓Predictable onset of action
- ✓Useful in basal-bolus regimens
DPDPE Dosing
Intrathecal 0.01-1 ug per animal|Intracerebroventricular 0.01-0.5 ug per animal|In vitro 0.1-20 nM
Insulin Lispro Dosing
Inject SC 0-15 minutes before meals|Adjust dose to carbohydrate intake and premeal glucose|Often paired with a basal insulin
DPDPE Side Effects
- ⚠sedation
- ⚠nausea-like opioid effects
- ⚠tolerance with repeated dosing
Insulin Lispro Side Effects
- ⚠Hypoglycemia
- ⚠Weight gain
- ⚠Injection-site reactions
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.
Insulin Lispro
Clinical studies show faster onset and shorter duration than regular insulin, improving post-meal glucose control. It is a standard comparator in diabetes pharmacology and closed-loop insulin-delivery research.
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