DSIP (Delta Sleep-Inducing Peptide)
DSIP was named for inducing delta sleep, but independent labs failed to replicate that in humans, no one has found its receptor or gene, and its best human stress trial found zero effect. Fascinating biology, unproven clinically.
DSIP (Delta Sleep-Inducing Peptide / Emideltide) is a nonapeptide studied for sleep, stress, and opioid withdrawal. Its human sleep data is inconsistent, its receptor is unknown, rodent stress effects failed to translate to humans, and it is not FDA-approved, with a PCAC review set for July 2026.
DSIPEmideltidepeptidessleepdelta sleep+2