Orexin-A vs L-692,429
Head-to-head comparison of Orexin-A (Hypocretin-1 (Orexin-A)) and L-692,429 (L-692,429) — benefits, dosing, side effects, research data, and where to buy.
| Property | Orexin-A | L-692,429 |
|---|---|---|
| Category | Cognitive Enhancement | Growth Hormone |
| Full Name | Hypocretin-1 (Orexin-A) | L-692,429 |
| Molecular Weight | 3562 Da | N/A |
| Half-Life | Minutes to <1 hour | unknown / study-dependent |
| Amino Acids | 33 | N/A |
| Typical Dose | Research-only; no validated human dose | 0.03-0.1 mg/kg |
| Route | Intracerebroventricular/Intranasal | Oral |
| Purity | ≥98% | ≥98% |
| Studies Count | 42 | 30 |
| Research Status | Pre-clinical | Pre-clinical |
Orexin-A Benefits
- ✓wakefulness
- ✓attention
- ✓memory consolidation
- ✓fatigue resistance
L-692,429 Benefits
- ✓potent GHSR agonism
- ✓oral bioactivity in models
- ✓validates ghrelin pathway
- ✓useful research probe
Orexin-A Dosing
Research-only i.c.v. microgram/nanomolar studies|intranasal experimental use|no established human protocol
L-692,429 Dosing
0.03-0.1 mg/kg in early studies|single oral or short-course research dosing|serial GH sampling recommended
Orexin-A Side Effects
- ⚠insomnia
- ⚠headache
- ⚠blood pressure changes
L-692,429 Side Effects
- ⚠increased appetite
- ⚠glucose intolerance
- ⚠transient prolactin changes
Research Overview
Orexin-A
Preclinical studies link orexin signaling to arousal, learning, and memory consolidation, making orexin-A a candidate for cognition-related research. It is not an approved cognitive enhancer and remains an experimental peptide.
L-692,429
L-692,429 was important in early GH secretagogue research because it showed that nonpeptide molecules could trigger robust GH release. It remains a classic tool compound for studying receptor-mediated GH pulsatility and appetite signaling.
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