Delta Sleep-Inducing Peptide (DSIP) is a nonapeptide (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) originally isolated from cerebral venous blood during published electrophysiology studies. The compound has been characterized in neuroendocrinology literature for its documented interactions with sleep-wake regulatory mechanisms, stress-responsive neuroendocrine pathways, and circadian oscillator function.
Published research has examined DSIP’s effects on EEG spectral parameters, corticotropin-releasing hormone axis dynamics, and monoaminergic neurotransmitter metabolism in experimental models. The compound has also been referenced in studies investigating its interactions with opioid receptor signaling and its modulatory effects on thermoregulatory pathways.
Each 15mg vial contains lyophilized DSIP with analytical verification of sequence identity, purity, and peptide content. The preparation is manufactured under conditions appropriate for neuroendocrine research applications.
For research and investigational purposes only. Not for human or veterinary use.




