--- title: "DSIP | PepTracker Pro" description: "A neuropeptide studied for its role in sleep regulation and stress modulation." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "name": "PepTracker Pro", "url": "https://peptrackerpro.com", "logo": "https://peptrackerpro.com/favicon.png", "description": "Evidence-based educational resource dedicated to improving peptide research literacy.", "contactPoint": { "@type": "ContactPoint", "email": "hello@peptrackerpro.com", "contactType": "customer support" }, "sameAs": [] }, { "@context": "https://schema.org", "@type": "MedicalWebPage", "name": "DSIP", "description": "A neuropeptide studied for its role in sleep regulation and stress modulation.", "url": "https://peptrackerpro.com/peptides/dsip", "lastReviewed": "2026-07-21", "reviewedBy": { "@type": "Organization", "name": "PepTracker Pro Research Team", "url": "https://peptrackerpro.com" }, "isPartOf": { "@type": "WebSite", "name": "PepTracker Pro", "url": "https://peptrackerpro.com" } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://peptrackerpro.com" }, { "@type": "ListItem", "position": 2, "name": "Peptides", "item": "https://peptrackerpro.com/peptides" }, { "@type": "ListItem", "position": 3, "name": "DSIP", "item": "https://peptrackerpro.com/peptides/dsip" } ] }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "People researching natural sleep-promoting compounds?", "acceptedAnswer": { "@type": "Answer", "text": "DSIP is a research peptide studied in preclinical models. A neuropeptide studied for its role in sleep regulation and stress modulation." } }, { "@type": "Question", "name": "Those interested in neuropeptide research?", "acceptedAnswer": { "@type": "Answer", "text": "DSIP is a research peptide studied in preclinical models. A neuropeptide studied for its role in sleep regulation and stress modulation." } }, { "@type": "Question", "name": "Individuals exploring non-pharmaceutical sleep support research?", "acceptedAnswer": { "@type": "Answer", "text": "DSIP is a research peptide studied in preclinical models. A neuropeptide studied for its role in sleep regulation and stress modulation." } } ] } ] --- [Skip to main content](#main) **Educational information only.** This site does not provide medical advice. [Read full disclaimer](/disclaimer) [PepTracker Pro](/) [Home](/)[Peptides](/peptides)[Compare](/compare)[Glossary](/glossary)[Blog](/blog)[Calculators](/calculators)[Start Here](/start) [Open the App](https://app.peptrackerpro.com) [Peptides](/peptides)/ DSIP **Research-only content.** This page is for educational purposes and does not constitute medical advice. [Read full disclaimer →](/research-disclaimer) # DSIP Low Evidence A neuropeptide studied for its role in sleep regulation and stress modulation. Aliases Delta Sleep-Inducing Peptide +1 more Evidence Low Evidence Last Updated 2026-07-21 Reading Time 3 min ## Table of Contents 1. [What It Is](#what-it-is) 2. [Regulatory Status](#regulatory-status) 3. [Why Researchers Study It](#why-researchers-study) 4. [Proposed Mechanisms](#proposed-mechanisms) 5. [Evidence Snapshot](#evidence-snapshot) 6. [Commonly Discussed Benefits](#benefits) 7. [Safety & Cautions](#safety) 8. [Comparisons](#comparisons) 9. [Calculator Tools](#calculator) 10. [Citations](#citations) ## What It Is DSIP (Delta Sleep-Inducing Peptide) is a nine-amino-acid neuropeptide first isolated from rabbit cerebral venous blood in 1977. When infused into the mesodiencephalic ventricle of rabbits, it induces spindle and delta EEG activity and reduces motor activity. Research has explored DSIP's potential role in promoting delta-wave (deep) sleep, modulating stress responses, influencing circadian rhythms, and interacting with the endocrine system. A double-blind, placebo-controlled study in chronic insomnia patients found higher sleep efficiency and shorter sleep latency with DSIP compared to placebo, though the effects were modest and researchers concluded that short-term DSIP treatment alone is unlikely to provide major therapeutic benefit for chronic insomnia. More recent preclinical work has explored fusion peptide strategies — a 2024 study published in Frontiers in Pharmacology demonstrated that DSIP fused with blood-brain barrier-crossing peptides (DSIP-CBBBP), produced by Pichia pastoris, enhanced sleep-promoting and neurotransmitter-balancing effects in PCPA-induced insomnia mouse models. Animal stroke research has also shown that intranasal DSIP administration over 8 days accelerated recovery of motor functions in focal stroke rat models, with treated animals performing significantly better on rotarod tests. As of April 2026, the FDA announced removal of DSIP from the Category 2 bulk substances list, meaning it may be evaluated by the Pharmacy Compounding Advisory Committee (PCAC) for potential compounding eligibility. DSIP remains a research peptide with no FDA approval for any therapeutic indication. Also known as: Delta Sleep-Inducing Peptide, DSIP peptide ## Regulatory Status Category 1 — Bulk Compounding (PCAC review July 24, 2026) Moved from Category 2 back to Category 1 per HHS announcement February 27, 2026. FDA PCAC will review Emideltide/DSIP (free base and acetate) on July 24, 2026 for potential 503A Bulks List inclusion. Public comment docket FDA-2025-N-6895 open until July 22, 2026. Effective: February 2026 [View FDA Source](https://www.fda.gov/advisory-committees/advisory-committee-calendar/july-23-24-2026-meeting-pharmacy-compounding-advisory-committee-07232026) ## Why Researchers Study It DSIP attracts research interest because it is one of the few endogenous neuropeptides directly associated with delta-wave sleep induction. Its interactions with multiple physiological systems — stress response, circadian regulation, pain modulation, and endocrine signaling — make it a compelling subject for understanding sleep-related neuropeptide pathways. ## Proposed Mechanisms - Promotes spindle and delta EEG activity when administered to the mesodiencephalic ventricle - Modulates cortisol and ACTH levels, influencing the hypothalamic-pituitary-adrenal (HPA) stress axis - Interacts with opioid systems, potentially contributing to analgesic properties - May influence circadian clock gene expression and melatonin secretion patterns - Demonstrates neuroprotective effects in ischemic models, possibly via antioxidant pathways ## Evidence Snapshot Low Evidence Low Medium High Study Type Model Outcome Link Human (double-blind RCT) Chronic insomnia patients Higher sleep efficiency and shorter sleep latency vs placebo; effects modest — not considered major therapeutic benefit for chronic insomnia [Source](https://pubmed.ncbi.nlm.nih.gov/1299794/) Animal (rat) Focal stroke — intranasal administration Accelerated motor function recovery over 8 days; significant improvement on rotarod test vs controls [Source](https://www.mdpi.com/1420-3049/26/17/5173) Animal (mouse, 2024) PCPA-induced insomnia — DSIP-CBBBP fusion peptide Enhanced sleep-promoting effects and neurotransmitter rebalancing via BBB-crossing fusion peptide strategy [Source](https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2024.1439536/full) ## Commonly Discussed Benefits [Sleep](/benefits/sleep)[Mood](/benefits/mood)[Anxiety Relief](/benefits/anxiety-relief)[Pain Relief](/benefits/pain-relief) Researching DSIP ? Track it, set reminders, and keep notes in the free app. [Track in App](https://app.peptrackerpro.com/?add=dsip) ## Safety & Cautions - Most foundational research is dated (1980s–1990s); modern clinical data is limited - Mechanism of action not fully elucidated despite decades of study - Double-blind trial in chronic insomnia showed only modest benefit - PCAC review scheduled July 24, 2026 (alongside Semax) for potential 503A Bulks List addition; proposed indications include opioid withdrawal, chronic insomnia, and narcolepsy - Not FDA-approved for any condition ## Comparisons See how DSIP compares to related peptides: [DSIP vs CJC-1295](/compare/dsip-vs-cjc-1295) [DSIP vs Difelikefalin](/compare/dsip-vs-difelikefalin) [DSIP vs Ipamorelin](/compare/dsip-vs-ipamorelin) [DSIP vs Selank](/compare/dsip-vs-selank) [DSIP vs Semax](/compare/dsip-vs-semax) ## Calculator Tools Use our research tools to explore dosing and reconstitution data: [Reconstitution Calculator](/calculators) ## Citations 1. \[1\] Schneider-Helmert D. — Effects of DSIP on sleep of chronic insomniac patients. Neuropsychobiology. 1987 [PubMed](https://pubmed.ncbi.nlm.nih.gov/1299794/) 2. \[2\] Schoenenberger GA. — DSIP: a review of its functional significance. Trends Pharmacol Sci. 1984 [PubMed](https://pubmed.ncbi.nlm.nih.gov/16539679/) 3. \[3\] Khvatova EM. et al. — Delta sleep-inducing peptide recovers motor function after focal stroke. Molecules. 2021 [PubMed](https://www.mdpi.com/1420-3049/26/17/5173) 4. \[4\] Zhang L. et al. — Pichia pastoris secreted DSIP fusion peptide efficacy in insomnia models. Front Pharmacol. 2024 [PubMed](https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2024.1439536/full) ### Keep researching in the app - Log DSIP to your private tracker - Set a dosing reminder - Compare it side-by-side with your stack [Open PepTracker Pro Free](https://app.peptrackerpro.com/?add=dsip) [Browse more peptides](/peptides) ## Related Peptides ### CJC-1295 Medium Evidence A growth hormone releasing hormone analog studied for stimulating growth hormone secretion. 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In the Phase 3 KALM-1 and KALM-2 trials in hemodialysis patients with moderate-to-severe chronic-kidney-disease-associated pruritus, roughly 40-51% of difelikefalin-treated patients achieved a clinically meaningful (>=3-point) reduction on the 10-point Worst Itching Intensity NRS at 12 weeks versus roughly 20-28% on placebo. The FDA approved intravenous difelikefalin in August 2021; the EU approved it as Kapruvia in April 2022. [Pain Relief](/benefits/pain-relief)[Inflammation](/benefits/inflammation)[Skin](/benefits/skin)[disease-modification](/benefits/disease-modification)+1 more [View Details](/peptides/difelikefalin) [\+ Compare](/compare?select=difelikefalin)[](https://app.peptrackerpro.com/?add=difelikefalin) ### Ipamorelin Medium Evidence A selective growth hormone secretagogue studied for targeted GH release with fewer side effects than other GH peptides. [Muscle Growth](/benefits/muscle-growth)[Fat Loss](/benefits/fat-loss)[Recovery](/benefits/recovery)[Sleep](/benefits/sleep)+1 more [View Details](/peptides/ipamorelin) [\+ Compare](/compare?select=ipamorelin)[](https://app.peptrackerpro.com/?add=ipamorelin) ### Selank Medium Evidence A synthetic peptide analog of tuftsin studied for anxiolytic and nootropic properties. [Anxiety Relief](/benefits/anxiety-relief)[Mood](/benefits/mood)[Cognition](/benefits/cognition)[Neuroprotection](/benefits/neuroprotection)+1 more [View Details](/peptides/selank) [\+ Compare](/compare?select=selank)[](https://app.peptrackerpro.com/?add=selank) ### Semax Medium Evidence A synthetic peptide derived from ACTH, studied for cognitive enhancement and neuroprotective effects. [Cognition](/benefits/cognition)[Neuroprotection](/benefits/neuroprotection)[Mood](/benefits/mood)[Recovery](/benefits/recovery) [View Details](/peptides/semax) [\+ Compare](/compare?select=semax)[](https://app.peptrackerpro.com/?add=semax) [PepTracker Pro](/) Educational peptide information and research tracking tools. Not medical advice. #### Explore - [Peptide Directory](/peptides) - [Compare Peptides](/compare) - [Glossary](/glossary) - [Benefits](/benefits/sleep) #### Learn - [Blog](/blog) - [Calculators](/calculators) - [Start Here](/start) - [About](/about) #### Legal - [Editorial Policy](/editorial-policy) - [Research Disclaimer](/research-disclaimer) - [Disclaimer](/disclaimer) - [Privacy Policy](/privacy) - [Terms of Service](/terms) - [Contact](/contact) © 2026 PepTracker Pro. Educational purposes only. Not medical advice. Always consult a licensed healthcare provider.