DSIP You've probably seen it come up more often lately. DSIP stands for *Delta Sleep Inducing Peptide*. A peptide often used with the goal of improving sleep quality and recovery. In Delta Sleep Inducing Peptide (dSIP) Polyclonal Antibody, Cat#CAU27311 Biomatik Delta Sleep Inducing Peptide (dSIP) Antibody Abbexa Ltd Synthesis of the Tripeptide l Trp l Ser l Glu: Comparison of its biological activity with that of the Delta Sleep Inducing Peptide (DSIP): Monnier, V.M.: 9783764309152: Books Amazon.ca