DSIP 10mg (Delta sleep inducing peptide) Particle Peptides Melatonin 10mg Time Release HSA FSA Eligible HSA Home Medical Sleep Aids Walgreens 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 Melatonin Activated Micro Soluble Spray