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DSIP (Delta Sleep-Inducing Peptide) Increases slow-wave sleep duration; modulates serotonin and GABA activity in the thalamus 12–18 minute reduction in sleep latency (Schneider-Helmert, 1981) Increases slow-wave sleep by 31%; red…
| Peptide | Primary Mechanism | Sleep Phase Affected | Research Maturity | Typical Dosing Range (Research Models) | Reconstitution Stability | Bottom Line ||—|—|—|—|—|—|| DSIP | Delta-opioid receptor agonism | Slow-wave (NREM Sta…
DSIP Delta-opioid receptor agonist. Reduces cortisol-driven wakefulness 60–90 minutes before sleep 100–500 mcg subcutaneous Sleep-onset insomnia, stress-related waking Works fastest but requires consistent timing. Miss the window…