Peptides
DSIP (Delta Sleep-Inducing Peptide)
Also called DSIP
DSIP is explored for easier sleep, fewer nighttime awakenings and feeling more rested the next day. Its name sounds like a guaranteed sleep switch, but the human findings are mixed. In one small blinded insomnia study, subjective sleep quality did not improve and the researchers judged the short-term benefit limited.
Dosage & duration
Historical human insomnia-study context
Bes et al. blinded study
Published example · product-specific- Dose
- 25 nmol/kg
- How often
- IV administration on three consecutive afternoons
- How long
- Before study nights 3, 4 and 5
Not a subcutaneous bedtime regimen. The trial did not establish a major therapeutic benefit.
Sources: 1
Online SC amounts are not interchangeable with this IV experiment. No established home-use frequency or long-term cycle follows from it.
Why people look into it
A better night and a clearer morning
These are the sleep changes people hope for.
-
Fall asleep
Spend less time lying awake before sleep starts.
-
Stay asleep
Have fewer or shorter awakenings through the night.
-
Feel rested
Wake with enough alertness to function the next day.
Why do people try it?
The goal is usually a better night rather than daytime performance enhancement. But trouble falling asleep, repeated awakenings and waking unrefreshed can have different causes. A peptide name that contains “sleep-inducing” does not establish the right answer to each problem.
What did human research find?
The small blinded study found limited objective changes and no improvement in how participants rated their sleep. Other older reports were more positive. Together they do not support a reliable promise of deeper sleep or an established modern SC protocol.
Why do online experiences vary?
People report both better sleep and worse nights. People also combine sleep medicines, other peptides and changing routines. A before-and-after wearable chart cannot isolate DSIP’s contribution. Keep next-day function in the picture.
When a sleep assessment helps more
Persistent insomnia, loud snoring, breathing pauses or marked daytime sleepiness deserves assessment. Repeatedly changing a peptide amount can miss a treatable cause. The relative timing curve does not predict sleep stages or rule out a sleep disorder.
Model details: DSIP (Delta Sleep-Inducing Peptide) · relative timing
Compare timing and buildup for this compound. The values are not blood concentrations or a measure of strength.
Relative timing from animal research; a human blood profile is not established.
Timing assumptions and sources
1984 enzyme-immunoassay: four anesthetized dogs,1–2 mg IV; meanhalf-life 4.0±0.7 min; monkey 2.9 min, rats 2.0±0.54 min. A4 min relative timing anchor must be labeled animal IV.
One 1 mg input peaks at 1 relative unit after a single dose. Other amounts scale proportionally; overlapping doses add when accumulation is on. Different compounds use separate relative scales.
- Timing half-life used
- 0.06666667 hours
- Absorption half-life assumed
- 0.01666667 hours
- Reference amount for the relative scale
- 1 mg
- Absorption half-life is assumed to be one quarter of the slower timescale (0.016666666666666666 h); it is not a measured absorption parameter.
- A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
- C-terminal immunoreactivity is less specific than modern intact-peptide LC-MS.
- No human SC absolute calibration established; endogenous protein-bound DSIP-like material is different.
- Effects of delta sleep-inducing peptide on sleep of chronic insomniac patients. A double-blind study.
1984 enzyme-immunoassay: four anesthetized dogs,1–2 mg IV; meanhalf-life 4.0±0.7 min; monkey 2.9 min, rats 2.0±0.54 min. A4 min relative timing anchor must be labeled animal IV.
- 1984 DSIP enzyme-immunoassay clearance experiment
Dog IV mean 4 min, monkey 2.9 min and rat 2 min; no human SC calibration.
dsip-relative-timing-2026-10 · version 1
Common questions
Will DSIP increase deep sleep?
That is a common hope, but a dependable effect is not established. A wearable’s estimated sleep stages are not a clinical confirmation of a peptide response.
Should a bedtime dose be based on the study amount?
The cited study used IV doses on three afternoons. It does not establish an equivalent SC bedtime amount or a long-term course.
Sources Labels, studies and notes behind this guide
Catalog evidence: Other human research. This describes the type of evidence, not a clinical review of every claim.
Summary and fact source checks: 2026-10-07. This records source checking, not medical review of the whole page.
Notes on the quick facts
- Main goal
- Falling asleep, staying asleep and next-day alertness are separate outcomes.
- Human results
- The blinded trial did not establish a major short-term benefit.
- Wearable scores
- Estimated sleep stages do not establish a peptide effect.
- 1. Bes et al.: blinded DSIP insomnia study
Original abstract inspected: 16 chronic insomnia patients; 25 nmol/kg IV on afternoons before nights3–5; weak objective effects, no subjective-quality improvement.
- 2. Effects of delta sleep-inducing peptide on sleep of chronic insomniac patients. A double-blind study.
1984 enzyme-immunoassay: four anesthetized dogs,1–2 mg IV; meanhalf-life 4.0±0.7 min; monkey 2.9 min, rats 2.0±0.54 min. A4 min relative timing anchor must be labeled animal IV.
- 3. 1984 DSIP enzyme-immunoassay clearance experiment
Dog IV mean 4 min, monkey 2.9 min and rat 2 min; no human SC calibration.
- 4. van Kammen et al. 1992 — DSIP-like immunoreactivity
Observational CSF/sleep correlation in 15 men with schizophrenia; no peptide-treatment experiment.
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