Nociceptin vs DADLE
Head-to-head comparison of Nociceptin (Nociceptin/orphanin FQ) and DADLE ([D-Ala2, D-Leu5]-enkephalin) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Nociceptin | DADLE |
|---|---|---|
| Category | Pain Management | Pain Management |
| Full Name | Nociceptin/orphanin FQ | [D-Ala2, D-Leu5]-enkephalin |
| Molecular Weight | 1881.1 Da | 569.67 Da |
| Half-Life | ~minutes | 5-20 minutes in plasma |
| Amino Acids | 17 | 5 |
| Typical Dose | no approved human dose|research-only | 0.01-2 ug per animal |
| Route | intrathecal|intranasal | Intrathecal / intracerebroventricular |
| Purity | ≥98% | ≥98% |
| Studies Count | 44 | 450 |
| Research Status | Pre-clinical | Pre-clinical |
Nociceptin Benefits
- ✓allodynia reduction
- ✓central pain modulation
- ✓neuropathic pain research
DADLE Benefits
- ✓delta-opioid agonism
- ✓enhanced peptide stability
- ✓spinal analgesia models
- ✓research on tolerance mechanisms
Nociceptin Dosing
no established human dose|research-only dosing varies
DADLE Dosing
Intrathecal 0.01-2 ug per animal|Intracerebroventricular 0.01-1 ug per animal|In vitro 0.1-50 nM
Nociceptin Side Effects
- ⚠sedation
- ⚠dysphoria
DADLE Side Effects
- ⚠sedation
- ⚠motor suppression at higher doses
- ⚠opioid tolerance with repeated exposure
Research Overview
Nociceptin
Nociceptin is a major pain-pathway peptide in the spinal cord, brainstem, and trigeminal system. Its relevance to migraine and neuropathic pain is mainly preclinical, where receptor-selective tools are being explored.
DADLE
DADLE has been studied for analgesic, neuroprotective, and receptor-selective opioid effects in animal and tissue models. It remains important as a mechanistic probe because it is more stable than endogenous enkephalins but still peptide-like in its delivery constraints.
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