when your sleep cycle doesn't work anymore DSIP for Deep Sleep: Benefits, Dosage & Safety The Effects of Dsip on Pain Threshold During Light and Dark Periods in Rats are not Naloxone Sensitive DSIP, delta sleep inducing peptide. Few know it. Fewer use it well. Supports deeper delta wave sleep Improves REM cycles Works the same night it's taken I use it personally. When DSIP Peptide Unlock Better Sleep & Relaxation FIT9 Asp5) Delta Sleep Inducing Peptide (DSIP isoD) Polypeptide MedChemExpress