DSIP
Delta Sleep-Inducing Peptide | Sleep & Stress Modulator
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What is DSIP?
DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nine-amino-acid peptide first identified in rabbit brain tissue in 1974. Researchers have studied it for its effects on sleep-related brain signaling, stress-hormone pathways, and pain signaling, mostly in animal models with some smaller human studies. It's sold here strictly as a research chemical for laboratory study, not for use in people or animals.
Key terms:
DSIP is a nonapeptide.
DSIP (Delta Sleep-Inducing Peptide) is a natural peptide of nine amino acids: Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. Researchers first found it in rabbit brain tissue in 1974 and isolated it for its sleep-promoting effects. Since then, studies have reported wider effects on brain signaling, including stress reduction, changes in pain signaling, and hormone regulation. How it works, and how well it works, are still open research questions.
Key research areas
- Enhanced sleep quality through slow-wave sleep promotion
- Stress reduction via cortisol modulation
- Potential pain relief
- Mood stabilization without traditional sedative effects
Researched dosing
This table reflects the study designs and dose ranges researchers and the community have used with DSIP — presented as research-methodology reference, not usage instructions.
| Phase | Dose | Frequency | Route |
|---|---|---|---|
| Sleep studies | 100-200mcg | Once nightly | Subcutaneous |
| Chronic pain models | 250-300mcg | Daily | IV or SubQ |
| Stress-response studies | 150mcg | Evening | Subcutaneous |
| Withdrawal models | 200-300mcg | Twice daily | IV preferred |
| Athletic-recovery studies | 100-150mcg | Post-training | Subcutaneous |
Commonly cycled 2 weeks on, 2+ weeks off.
How it works
At the cell level, DSIP research looks at how the peptide interacts with several brain-signaling systems at once (GABA, NMDA, the body's natural opioid system) — the terms below are just the names for those signaling pathways.
Modulates multiple neurotransmitter systems including GABA enhancement, NMDA receptor interaction, and endogenous opioid system modulation. Also regulates hypothalamic-pituitary-adrenal axis.
Pharmacokinetics
This chart shows how quickly a research dose of DSIP is absorbed and cleared in the cited studies — notice the very short timescale, measured in minutes rather than hours.
- Peak
- 0.5 hr
- Half-life
- 0.133 hrs
- Cleared
- ~0.65 hrs
Graf et al.
Research applications
This section summarizes the research areas — sleep-related brain signaling, stress-hormone pathways, and pain signaling — that scientists have studied for DSIP, a summary of what's been investigated in the literature, not medical claims about people.
Sleep
Promotes delta wave sleep, the most restorative sleep phase for physical recovery. Reduces sleep latency and nocturnal awakenings without morning grogginess. Supports natural sleep cycles rather than forcing sedation like traditional sleep aids.
Mood
Supports mood stabilization and stress reduction through cortisol modulation and neuromodulatory effects on the HPA axis.
Metabolic
Modulates endocrine regulation including ACTH, cortisol, and growth hormone release, suggesting broad neuroendocrine regulatory effects.
Dosage reference
- Doses used in research
- 100–200 mcg per dose
- Frequency in studies
- Once daily, 30-60 minutes before bed
- Handling
- Reconstituted solution — research use only; not for administration
- Timeline reported in studies
- Sleep pressure: 30-60 min, Deep sleep: first night, Full benefits: 3-5 days
- Storage
- Refrigerate at 2-8°C, protect from light, use within 14 days
- Cycle length
- 5-10 consecutive days
- Break between cycles
- 2-4 weeks between cycles
Interactions
This list shows which other peptides and compounds are studied or used alongside DSIP, and why.
Reconstitution & storage
This is the standard laboratory method for turning freeze-dried DSIP powder into a liquid research solution using bacteriostatic water.
- Clean vial tops with alcohol swab and let dry completely.
- For 1mg vial, add 1ml BAC water (creates 1mg/ml or 1000mcg/ml).
- Inject water slowly down vial side to prevent foaming.
- Gently roll between palms - do not shake.
- Solution should be clear and colorless.
- For 100mcg dose, draw 0.1ml (10 units on insulin syringe).
- Store the reconstituted solution refrigerated (2–8°C), labeled with the date and concentration, for laboratory research use only.
Lyophilized: Room temperature or refrigerated; protect from light, use within As per manufacturer specification
Reconstituted: 2-6°C, use within 14 days; protect from light and temperature fluctuations
Open the DSIP reconstitution calculatorQuality indicators
These are the checks — powder appearance, solution clarity, stability — researchers use to confirm a DSIP sample hasn't degraded, since DSIP is noted in the literature for being less stable than many other peptides.
White lyophilized powder - Pure DSIP appears as white to off-white powder before reconstitution
Clear solution when mixed - Properly reconstituted DSIP should be completely clear and colorless
Short stability period - DSIP has limited stability - use reconstituted solution within 14 days
Yellow or cloudy solution - Indicates degradation or contamination - do not use
Reputable source essential - Due to instability, source quality is critical - verify third-party testing
Protect from degradation - DSIP degrades quickly - minimize light exposure and temperature fluctuations
What to expect
This timeline summarizes what animal and small human studies report at each stage — research context for comparing studies, not a personal-results promise.
Noticeable sleep pressure and easier sleep onset.
Deeper sleep, fewer awakenings, vivid dreams possible.
Improved morning refreshment, stable daytime energy.
Cumulative stress reduction, mood improvements.
Benefits may persist 1-2 weeks after stopping.
Safety notes
This section covers handling cautions for DSIP — research-use-only scope, not medical advice.
- Avoid driving until effects are known
- Not recommended during pregnancy or breastfeeding
Regulatory status
- Not approved by the FDA for any indication.
- Supplied and described for laboratory research use only — not for human or veterinary use.
Community data
Community Insights
Based on data the community reported. Not clinical proof.
References
Intranasal DSIP administration before and after induced stroke accelerated motor function recovery without significantly reducing infarct size, suggesting neuroprotective mechanisms.
Double-blind crossover study showed DSIP improved objective sleep quality with higher sleep efficiency and shorter sleep latency compared to placebo, though subjective improvements were modest.
Multiple studies demonstrated DSIP modulates ACTH, cortisol, and growth hormone release, suggesting broad neuroendocrine regulatory effects beyond sleep.