Frontiers Pichia pastoris secreted peptides crossing the blood brain barrier and DSIP fusion peptide efficacy in PCPA induced insomnia mouse models DSIP Sleep Regulation & Stress Response DSIP Peptide for Sleep LIVV Natural Have you heard of DSIP? In this study, delta sleep induced peptide was given to only 17 participants! But it helped improve their sleep markers.. unfortunately only 17 patients used but they Potential Indications of Melatonin and Secretin in Children and Adolescents Psychopharmacology Institute