Best Peptides for Sleep

Delta Sleep-Inducing Peptide (DSIP) is a naturally occurring neuropeptide first isolated from rabbit brain in 1977. It plays a central role in modulating sleep architecture, particularly promoting delta-wave (slow-wave) sleep — the most restorative phase of the sleep cycle. DSIP also demonstrates stress-protective, analgesic, and neuroendocrine-regulatory properties. It is one of the most extensively studied sleep peptides and has been used clinically in Europe for insomnia and chronic pain syndromes.