DSIP (Delta Sleep–Inducing Peptide) is a neuropeptide studied for its potential role in sleep architecture modulation and stress-response regulation. Initially identified in research examining delta-wave sleep patterns, DSIP has been investigated for its interaction with neuroendocrine signaling pathways. In experimental settings, it is explored for its influence on circadian rhythms, cortisol modulation, and central nervous system balance. Intended strictly for laboratory and research use.