DSIP 5mg Nasal Spray – 50mcg/Spray

Delta Sleep Inducing Peptide (DSIP) is a naturally occurring neuropeptide originally isolated from rabbit cerebral venous blood in 1974 by Swiss researchers studying sleep induction; one of the earliest endogenous peptides identified through sleep research. Hudson Science’s formulation delivers 5mg total DSIP at 50mcg per metered spray in a nasal delivery system. A non invasive administration route particularly well suited to a centrally acting neuropeptide, as nasal delivery provides proximity to the olfactory epithelium and potential access to the central nervous system via the olfactory nerve pathway, bypassing the blood brain barrier considerations that complicate peripheral administration of neuroactive peptides. DSIP’s research profile extends considerably beyond its original sleep induction characterization. The peptide has accumulated investigation across a diverse range of neurological and endocrine pathways, including modulation of hypothalamic pituitary axis activity, corticotropin and LH release regulation, stress response attenuation, and antioxidant activity in neuronal tissue. DSIP receptors have been identified across multiple brain regions including the hypothalamus, limbic system, and cortex, suggesting a broad neuromodulator role beyond simple sleep induction. This distributed receptor presence has made DSIP a frequently studied reference compound in research examining endogenous neuropeptide signaling across sleep, stress, and neuroendocrine regulation pathways. The nasal spray format is a pharmacokinetically meaningful delivery choice for DSIP specifically. As a neuropeptide with central nervous system targets, peripheral administration routes face blood brain barrier permeability limitations that can reduce the fraction of administered compound reaching CNS receptor populations. Nasal delivery’s proximity to the olfactory nerve pathway provides a potential direct CNS access route that has generated specific research interest in intranasal neuropeptide delivery studies making the nasal spray format a distinct and research relevant presentation compared to injectable DSIP preparations for protocols examining central neuropeptide activity. Hudson Science formulations are stocked by Canada Steroid Depot following the same rigorous third party lab verification process applied to every product in our range. Each batch is tested for concentration accuracy and purity before being made available, with COA documentation available on request. CSD’s sourcing standards apply uniformly across all manufacturers we carry, and Hudson Science’s DSIP nasal spray meets those standards consistently. All orders ship discreetly across Canada in plain, unmarked packaging with no identifying information on the exterior. Store at 2–8°C away from direct light. Do not freeze. Keep upright. Intended for research purposes only. Commonly researched alongside Selank and other nootropic peptides in comparative neuropeptide signaling and sleep regulation studies. Browse CSD’s full peptide range for complete sourcing.