DSIP Sleep Peptide Purity 98% French Peptides DSIP Polar Peptides DSIP (Delta SleepInducing Peptide) is a naturally occurring neuropeptide first isolated in 1974. It's best known for its potential role in regulating sleep, stress, and neuroendocrine function. Here's a clear breakdown of Delta sleep inducing peptide (DSIP) LeadWest Medical DSIP 10mg (Delta sleep inducing peptide) Particle Peptides DSIP Injectable Team Wellcore