DSIP Peptide Unlock Better Sleep & Relaxation FIT9 Particle DSIP (Delta Sleep Inducing Peptide) DSIP is a naturally occurring neuropeptide that has attracted the attention of researchers for decades due to its association with sleep cycles, neuroendocrine mechanisms, and Human Delta Sleep Inducing Peptide (dSIP) ELISA Kit (HUDL00881) Delta Sleep Inducing Peptide an overview ScienceDirect Topics Delta Sleep Inducing Peptide L Tryptophan Somnosections Pre Nat Tobira Records Find restorative sleep in the neuropeptide DSIP (Delta Sleep Inducing Peptide). DSIP is a naturally occurring peptide designed to support: Deep, regenerative sleep Balanced circadian rhythm Emotional wellness & cortisol