CPC-1598 vs Melatonin
A side-by-side research comparison of CPC-1598 and Melatonin across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | CPC-1598 | Melatonin |
|---|---|---|
| Full name | CPC-1598 (GABAergic Sleep Peptide Analog) | Melatonin (N-Acetyl-5-Methoxytryptamine) |
| Category | Sleep & Recovery | Sleep & Recovery |
| Status | Research compound | OTC supplement / hormone |
| Mechanism | Selectively potentiates a3/a5-containing GABA-A subtypes in sleep-promoting VLPO neurons rather than broadly sedating. Promotes natural sleep onset without respiratory depression. | Produced by the pineal gland in response to darkness, melatonin binds MT1/MT2 receptors to promote sleep onset and shift circadian timing. It also acts as a direct free-radical scavenger and supports mitochondrial antioxidant defenses. |
| Molecular weight | ~650 Da | 232.28 Da |
| Half-life | 3-5 hours | ~40-60 minutes (immediate release) |
| Bioavailability | Moderate (SubQ) | Low and variable oral (~15%); sublingual improves onset |
| Typical dose | 200-500 mcg | 0.3-5 mg before bed |
| Frequency | Once before bed | Once nightly |
| Route | Subcutaneous | Oral or sublingual |
CPC-1598 reported benefits
- Selective sleep neuron targeting
- No benzo-like dependence
- Natural sleep architecture
- No respiratory depression
- Minimal next-day impairment
Melatonin reported benefits
- Faster sleep onset
- Circadian rhythm alignment
- Jet lag relief
- Potent antioxidant
- Mitochondrial protection
- Possible immune support
Related comparisons
Research and educational reference only. Not medical advice.