DSIP (delta sleep-inducing peptide) is a nonapeptide first isolated from rabbit cerebral blood and associated with slow-wave sleep regulation, stress adaptation and metabolic recovery in experimental studies. Its role in sleep-wake and neuroendocrine research keeps it in steady demand. This product is a white lyophilized powder at >=99% HPLC purity in a sealed vial. Each batch is documented, and both trial quantities and bulk supply are available with worldwide shipping. This item is part of a catalog covering hundreds of research peptides and supplements, allowing consolidated procurement from a single supplier. We answer technical questions within business hours, provide storage and handling guidance, and ship worldwide with full tracking and delivery confirmation. Loyal customers benefit from tiered pricing on repeat purchases.