DSIP 5 mg Delta Sleep Inducing Peptide Atomix Research ( ) 5 , Peptide DSIP (Delta sleep inducing peptide), Apex Biopharma, 1 vial * 5 mg 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 DSIP (5mg) Delta Sleep Inducing Peptide Sungod Labs