DSIP (Delta Sleep-Inducing Peptide) is a neuropeptide. It has been widely studied for its unique ability to induce deep sleep (delta sleep stage) and regulate circadian rhythms without causing strong sedative effects or dependence. It mainly acts on the central nervous system and helps regulate homeostasis as well as the body's responses to physiological and emotional stress.

In addition to its sleep-promoting properties, studies suggest that DSIP may exert positive effects on hormone secretion, assist in regulating cortisol levels, and offer neuroprotective effects, making it a valuable tool for research on sleep disorders, anxiety and physical recovery.