Peptide Decoding
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Decoding

DSIP (Delta Sleep-Inducing Peptide)_

Also known as delta sleep-inducing peptide

A before-bed peptide used to deepen sleep.

SleepSleep peptideResearch only
InBrain, mood and sleep
Common vial size5 mg
Dose0.1 up to 0.2 mg per dose (start low, increase slowly)
FrequencyNightly
RouteUnder the skin (subcutaneous)
StatusResearch only
MixYour choice, calculate it
CycledNo established schedule

Common vial size is what vendors typically sell, not a recommendation. Enter your own vial in the calculator.

01

What is DSIP (Delta Sleep-Inducing Peptide)?

Plain language first. The technical label stays, but it never stands alone.

Overview

DSIP (delta sleep-inducing peptide) is a natural 9-amino-acid brain peptide linked to deep sleep. In plain terms: taken before bed, it is used to encourage the deep, slow-wave stage of sleep, though results are inconsistent.

What it's used for

A before-bed peptide used to deepen sleep and improve sleep quality without the grogginess of sleeping pills.

02

How does DSIP (Delta Sleep-Inducing Peptide) work?

What it does in the body, and where.

DSIP was isolated in the 1970s from the blood of sleeping rabbits, and half a century later nobody is certain what it does.

  1. 01
    It appears to influence sleep-regulating signals
    The original finding was that it induced slow-wave sleep when infused into rabbits.
  2. 02
    Results in humans have been inconsistent
    Some small studies found effects on sleep onset, others found nothing. It has never been reliably reproduced.
  3. 03
    Its natural function is still unclear
    It is one of the longest-known peptides here and among the least understood.
Where it acts
Brain

Where this compound is thought to act.

03

What else is it used for?

Each use below carries its own evidence level. Approved means regulators have cleared it for that purpose. Investigational means it is in trials. Early research means it is being studied and is not established.

  • Deeper sleepEarly research
  • Chronic pain and withdrawal symptoms, where the older studies were doneEarly research
04

How much, and do you cycle it?

The range, and whether you take breaks.

0.1 up to 0.2 mg per dose (start low, increase slowly), nightly. No established scheduleNo range

No published study has established how long to take this or whether a break is needed. Schedules quoted online come from vendors and forums, and different sources disagree.

Compare cycling across compounds →

05

How do I dose and price it?

Enter your vial and your dose. Pick a mix. We show the draw and the cost.

The vial holds a fixed amount of drug. Adding more water does not make more drug, it just spreads it thinner, so you draw a bigger number on the syringe for the same dose.

Your vial size (mg)
Printed on the vial.
What you paid per vial
$
Used for cost per dose only.
Your dose (mcg)
Commonly referenced range: 0.1 up to 0.2 mg per dose (start low, increase slowly)Community practice

Choose your mix

your own mL
units · —
Enter your own volume

Measuring the water1 mL = one full 100-unit syringe.

Your draw

4 / 100 units
4 units is a very small line to read, so a small slip is a large error. A larger water volume above spreads the same dose across more units.
Full calculator with reorder date →Read a syringe →
06

How do you store it?

Before mixing, and after.

Dry powder in the freezer or fridge. Once mixed, fridge, and use within about a month.

Unmixed lyophilized DSIP (Delta Sleep-Inducing Peptide) keeps for a long time cold. Once you add water the clock starts: most reconstituted vials hold up for roughly 28 to 30 days at fridge temperature. Keep it out of light, and do not freeze it after mixing.

07

What are the side effects and cautions?

Known cautions and warnings for this compound.

Who should avoid it

Check these before anything else.
  • No modern controlled safety data exists
  • Pregnancy

Stop and get help

These are emergencies. Seek care.
  • Signs of an allergic reaction
  • Anything unusual, given the thin data

Common effects

Expected, and usually mild.
  • Reported as generally tolerated in small older studies
  • Results are inconsistent and there is no modern controlled safety database

Where this page says nothing is established, that means nobody has studied it, not that a compound is safe.

08

Is DSIP (Delta Sleep-Inducing Peptide) approved?

And where the numbers on this page come from.
Research only

No. Not FDA-approved.

Sold for research use only. Not cleared for human consumption or medical use.

  • DoseFrom research and community reports. No regulator has reviewed this dose.
  • Vial sizeFrom what vendors typically list; not a recommendation.
  • Reviewed22 July 2026
09

What else is like DSIP (Delta Sleep-Inducing Peptide)?

Others in Brain, mood and sleep, side by side.

If you're weighing DSIP (Delta Sleep-Inducing Peptide), it's worth reading Semax, Selank, and N-Acetyl Semax Amidate in the same class.

YOU ARE HERE
DSIP (Delta Sleep-Inducing Peptide)

A before-bed peptide used to deepen sleep.

Research only
Dose
0.1 up to 0.2 mg per dose (start low, increase slowly)
How often
Nightly
Semax

A nasal spray for sharper focus, memory, and mental clarity.

Research only
Dose
0.2 up to 0.6 mg per day
How often
1-2x daily
Selank

A nasal spray that eases anxiety while keeping you clear-headed.

Research only
Dose
0.25 up to 0.5 mg per day
How often
1-2x daily
N-Acetyl Semax Amidate

A longer-lasting version of Semax for focus and memory.

Research only
Dose
0.2 up to 0.4 mg per day
How often
1-2x daily
See other brain, mood, and sleep peptides
10

What these words mean

Show glossary +
Titrate
Starting at a low dose and increasing it slowly over time so your body adjusts and side effects stay mild.
Subcutaneous
An injection just under the skin, into the fat layer, usually with a short, thin insulin needle.
Intramuscular (IM)
An injection into a muscle, using a longer needle.
Reconstitution
Mixing a powdered peptide with liquid (bacteriostatic water) so it can be drawn into a syringe.
Bacteriostatic water
Sterile water with a tiny amount of preservative, used to mix powdered peptides.
Concentration
How strong the mixed peptide is, in milligrams per milliliter (mg/mL). More water makes it weaker; less water makes it stronger.
Units (on the syringe)
The marks on an insulin syringe. 100 units equals 1 mL. They measure how much liquid you draw, not the dose in milligrams.
mcg and mg
Units of dose. 1 milligram (mg) equals 1,000 micrograms (mcg).
GLP-1
A natural gut hormone that lowers appetite and blood sugar. Drugs that copy it, like semaglutide, are used for weight loss.
Growth hormone secretagogue
A compound that nudges your body to release more of its own growth hormone, rather than injecting the hormone itself.
Half-life
How long a compound stays active in your body. A longer half-life means you inject less often.
Peptide vs small molecule
A peptide is a short chain of amino acids. A few items here (like MK-677 or methylene blue) are small molecules, not true peptides, but people use them the same way.
Research only
No approved dose or use in people. Sold for research and not reviewed by the FDA for safety or quality.
Investigational
Still being tested in clinical trials and not yet approved or legally sold for general use.
Banned in drug-tested sport
Prohibited by the World Anti-Doping Agency (WADA); using it can disqualify a competing athlete.

Last reviewed 22 July 2026