DSIP
Shop DSIPAlso called: Delta Sleep-Inducing Peptide, Emideltide, Delta-Sleep Inducing Peptide
DSIP stands for Delta Sleep-Inducing Peptide. It is a tiny protein fragment made of nine building blocks called amino acids. It was first found in 1977 in the blood of rabbits, taken from a vein in the brain. Scientists study it in labs. It is not an approved medicine for people or animals.
DSIP got its name because early studies linked it to deep, slow-wave sleep. Research suggests it may help the body start sleep and change how long sleep lasts. It may also affect the body's stress system, which controls hormones like those made when you feel worried or scared. Some lab work hints it might protect brain cells and affect blood pressure too. Scientists think it works by changing signals between nerve cells in the brain.
Much is still unknown about DSIP. Most studies were done in animals or in lab dishes, not in large groups of people. Results in humans have been mixed, so no one can say for sure that it works. It is sold only as a research chemical, meaning it is not checked or approved for safety. Anyone handling it should be careful, since we do not know all its side effects.
Regulatory status
On July 24, 2026, PCAC voted 6–7 against recommending Emideltide (DSIP) for the Section 503A Bulks List — the only one of the seven peptides reviewed across the two-day meeting to be rejected. A "no" recommendation further defers any path to 503A compounding; FDA retains final authority but is unlikely to advance a substance the committee rejected. Emideltide remains an unapproved new drug and cannot lawfully be compounded by 503A pharmacies.
Benefits
What DSIP Helps With
The main themes across 67 research studies, in plain language.
Neuroprotection & cognitive
Addiction withdrawal support
85/100Rated 85/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 6 underlying claimsEvidence points to a role in managing withdrawal symptoms and reducing pain states associated with alcohol and opioid dependence.
Neuroprotection & cognition
85/100Rated 85/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 6 underlying claimsResearch suggests it may help protect the brain from stress and excitotoxicity, potentially supporting memory and learning functions.
HPA axis & stress response
85/100Rated 85/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 3 underlying claimsResearch suggests it may modulate the body's stress response system, potentially lowering stress-induced hormone levels.
Pain & mood modulation
75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 1 underlying claimSome studies suggest it may help reduce chronic pain levels and concomitant depressive symptoms.
Sleep & circadian
Sleep architecture & quality
85/100Rated 85/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 28 underlying claimsResearch suggests that DSIP may help normalize sleep patterns by promoting deep sleep stages and improving overall sleep efficiency.
Sleep latency & waking
85/100Rated 85/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 8 underlying claimsStudies indicate potential for reducing the time it takes to fall asleep and decreasing instances of waking up during the night.
Antioxidant & stress defense
85/100Rated 85/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 6 underlying claimsFindings suggest it helps restore antioxidant balance and protect cells from oxidative damage under stress conditions.
Hormonal regulation
90/100Rated 90/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 5 underlying claimsStudies indicate it may influence the release of key hormones such as growth hormone and reproductive hormones.
Mitochondrial energy function
85/100Rated 85/100Source typePeer-reviewed studyIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 2 underlying claimsPreliminary research points to a potential role in enhancing cellular energy production and protecting mitochondrial function.
Free: The Peptide Stack Cheat-Sheet
You just read the research on DSIP. The cheat-sheet maps the most-used peptide stacks — doses, timing, and what to check before buying — on one page.
No spam. Unsubscribe anytime.
How People Use It
2 reported routines — each line links to the source it came from.
From published sources
Routines as reported in peer-reviewed papers, clinical guidance, or vetted media — each linked to the source it came from.
SubQ
- Intravenous administration on 5 consecutive days followed by 5 injections every 48-72 h 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources4Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ source
General
- Injected into the lateral ventricle of cerebrum in rabbits; polygraphic monitoring for 7-12 h daytime 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ source
- Week 1 — 100 mcg · 6 units (0.06 mL)
- Week 2 — 150 mcg · 9 units (0.09 mL)
- Week 3 — 200 mcg · 12 units (0.12 mL)
- Weeks 4–8 — 250–300 mcg · 15–18 units (0.15–0.18 mL)
mg vs mcg: one milligram (mg) equals 1,000 micrograms (mcg) — multiply by 1,000 going from mg to mcg, divide by 1,000 going from mcg to mg. Mixing the two up is a thousand-fold dosing error: 1 mg taken instead of 1 mcg is a 1,000× overdose; 1 mcg instead of 1 mg is a 1,000× underdose. Always double-check the unit label and the decimal place.
Safety
Known Side Effects
Adverse effects reported in the research and by community use.
- HeadacheMildReported in 2 sources 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ pubmed.ncbi.nlm.nih.gov↗ peptidedosingprotocols.com
Reported in research and community sources — not exhaustive. Discontinue use and consult a healthcare professional if side effects occur.
Get DSIP
Compare research-grade suppliers with third-party COAs and published purity data. For in-vitro and laboratory research use only — not for human consumption, diagnosis, or treatment.
Evidence
Research Citations (42)
Every claim above traces back to a source you can check — here are 42 of them.
- Source
The delta sleep inducing peptide (DSIP). Comparative properties of the original and synthetic nonapeptide.
1977 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Presence of delta-sleep-inducing peptide-like material in human milk.
1984 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
"Delta sleep-inducing peptide (DSIP): a still unresolved riddle"
95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Delta sleep-inducing peptide (DSIP): a still unresolved riddle.
2006 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Immunohistochemical distribution of delta sleep inducing peptide in the rabbit brain and hypophysis.
1989 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
"Delta-sleep inducing peptide and neuronal activity after glutamate microiontophoresis: the role of NMDA-receptors"
95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Delta-sleep inducing peptide and neuronal activity after glutamate microiontophoresis: the role of NMDA-receptors.
2004 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Delta sleep-inducing peptide modulates the stimulation of rat pineal N-acetyltransferase activity by involving the alpha 1-adrenergic receptor.
1987 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Characterization, properties and multivariate functions of delta-sleep-inducing peptide (DSIP).
1984 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
High delta sleep-inducing peptide-like immunoreactivity in plasma in suicidal patients with major depressive disorder.
1998 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Delta sleep-inducing peptide and glucocorticoid-induced leucine zipper: potential links between circadian mechanisms and obesity?
2009 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Production and immunohistochemical application of monoclonal antibodies against delta sleep-inducing peptide.
1992 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Delta sleep inducing peptide (DSIP) stimulates the release of LH but not FSH via a hypothalamic site of action in the rat.
1987 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
DSIP: the sleep peptide or an unknown hypothalamic hormone?
1994 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Delta-sleep-inducing peptide sequels in the mechanisms of resistance to emotional stress.
1995 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →
News
Latest on DSIP
Dated, sourced reporting that mentions DSIP.
Wondering how DSIP pricing compares across suppliers? Our original market data shows the full picture.
See the State of the Peptide Market 2026 →Related on The Health Stacks
Explore by goal
Related peptides