DSIP (Delta Sleep Inducing Peptide) Simon's Compounding Delta Sleep Inducing Peptide an overview ScienceDirect Topics PhosphoProteomics & PhosphoProtein Service Applied Biomics Phospho specific Antibodies Creative Diagnostics Researchers gave insomnia induced mice a fusion peptide engineered to slip into the brain. It restored serotonin, dopamine, and melatonin and helped sleep more than plain DSIP. Source: Mu et al.,