DSIP with selank and epitalon dosage and evidence
Written by Aaron CuhaReviewed Sep 2026
The short answer
A sleep and body clock blend, usually 2 mg DSIP, 2 mg epitalon and 0.5 mg selank.
Evidence grade for DSIP with selank and epitalon: Limited. The rule: people have taken it in a published study, but fewer than 100 of them. The sum on this page: 1 completed trial, 62 people given it. A grade counts how much has been done to people, not whether it works.
- People given it
- 62
- Human studies
- 1
- Found nothing
- 0
Dose
No human dose established
Amounts that were given in studies sit in Human evidence on this page. None of them is a personal dose.
1 completed trial, 62 people given it
6 effects reported, 4 unwanted, 2 wanted, by people using it, not a trial
Goal pages: Brain, memory and mood, Sleep
In plain English
In plain English, from Aaron
This is how I would explain it to a friend. The evidence, with the numbers, is further down the page.
A sleep blend, usually 2 mg DSIP, 2 mg epitalon and 0.5 mg selank. Only one of the three has any sleep evidence, and it is from the 1980s. Nobody has repeated it since.
What people take it for
- Falling asleep faster.
- Staying asleep.
- Fixing a broken body clock.
- Winding down at night.
What studies in people showed
The blend has never been tested. DSIP has two human sleep studies. One was a 1981 report in the Lancet saying it improved sleep in people with insomnia. The other was a 1987 study with a dummy group, looking at sleep and waking across 24 hours in people with severe long term insomnia. That is the whole file, and it is forty years old. Sleep research has changed completely since then and nobody has tried to repeat it. Epitalon has no proper human sleep trial at all. Its human record is Russian anti aging work, not sleep. It is in here because of the pineal gland link. Selank does have a trial, for anxiety: 62 people, about as good as a standard anxiety drug. That same trial also reported that selank picks people up. Now the math. The two parts with no modern sleep evidence make up 89 percent of the peptide. The one part with a real trial is 11 percent, and its trial says it is stimulating.
What people report
Reports, not study results
The good
- Falling asleep faster and waking up less. This is the main report.
- Very vivid dreams.
The bad
- Grogginess the next morning in some people.
- Nothing at all, reported often.
- Feeling wired instead of sleepy in a few people, which fits what the selank trial found.
- Sleep is the easiest thing to fool yourself about. Paying attention to it changes how you rate it.
Where these come from: Peptide and nootropic forums plus seller pages. People talking. The stimulating effect is the one item here that also shows up in a real trial.
My bottom line
The DSIP evidence is not missing, it is frozen. Positive in 1981 and 1987 and never tried again, most likely because nobody can own the result. That is a reason to be curious, not a reason to buy a three part vial where the stimulant is the only part with a real trial.
An opinion, not a finding. I am a coach, not a doctor.
What it has been measured to do
Measured in people
Goals DSIP with selank and epitalon has been tested for in people, biggest studies first. We count only what the studies on this page say, so the real numbers may be higher.
- Mood and anxiety62 people · 1 study
What people using it report
Real people telling you what happened to them. Nobody checked it, and the people who post are not a fair sample, so it cannot prove anything works. It is still the best guide on this page to what people actually do with DSIP with selank and epitalon, what they expect, and what goes wrong. The full account, including the negative reports, is below.
35 of the 36 indexed goals have no study of any kind behind DSIP with selank and epitalon
No study in people, animals or cells on this page reports a result for these. That does not prove DSIP with selank and epitalon does nothing for them. It does mean anything you have heard about DSIP with selank and epitalon and one of these did not come from a study cited here.
Show full evidence
What is DSIP with selank and epitalon?
A sleep and body clock blend, usually 2 mg DSIP, 2 mg epitalon and 0.5 mg selank. So the two bigger ingredients are each four times the third by weight. The sleep evidence for DSIP in people is from the early 1980s, and no modern study has repeated it. Epitalon's record in people is Russian anti-ageing work, not sleep research. Nobody has studied the mix.
The three ingredients are sold as a body clock package. One to bring on sleep, one to reset the body clock, and one to take the edge off. Only one of the three has anything like sleep evidence, and it is forty years old.
Delta sleep-inducing peptide, or DSIP, was reported in a 1981 Lancet paper to improve sleep in people with insomnia. A 1987 study looked at its effect on sleeping and waking across 24 hours, in people with severe long-term insomnia. Those are the papers the product today rests on. They are small. They came before modern sleep lab standards and modern ways of reporting studies. And no modern study has repeated them. That is an odd kind of evidence. Not missing, but frozen in time.
Epitalon is a tiny peptide linked to the pineal gland, the small gland in the brain that makes the sleep hormone melatonin. It comes from a Russian research programme on so-called bioregulators. Its research is mostly Russian, and mostly about ageing and the protective caps on the ends of chromosomes, not sleep. A 2025 review sums up the claims made for it, with no modern proper study in people to back them. It is in a sleep blend because of the pineal gland's link to melatonin, not because any study shows it changes sleep.
Selank is the third ingredient. It has the only proper study in people of the three, and that study is about anxiety, not sleep. 62 patients with long-running anxiety or nervous exhaustion were treated. Selank calmed anxiety about as well as an older drug called medazepam. It also lifted energy and alertness. That last part is worth noticing on a sleep product. The study on selank says plainly it acted as a stimulant, and it is in a blend sold to help people sleep.
The math on the common 2 plus 2 plus 0.5 mg mix. There is 4.5 mg of peptide in all. DSIP and epitalon are 44.4% each, and selank is 11.1%. The two ingredients with the weakest sleep evidence are 89% of the peptide. The one with a real study in people is the smallest share, and it is known to act as a stimulant.
How does DSIP with selank and epitalon work?
DSIP is a small peptide, nine building blocks long. It was found in the brain blood of rabbits during sleep experiments. How it works in people is not known, and the body clears it fast. Epitalon is a tiny peptide from the Russian bioregulator programme. It is claimed to act on the pineal gland and on the enzyme that rebuilds the caps on the ends of chromosomes, mostly based on cell work and Russian medical work. Selank is a copy of the immune peptide tuftsin. It calms anxiety, and this is linked to how the body breaks down its own natural painkillers. No published work looks at the three together, or at how they affect each other.
What have studies in people found about DSIP with selank and epitalon?
The sleep evidence is two studies from the 1980s, for one ingredient. The other two have data in people for other things, and one of those things is acting as a stimulant.
- DSIP: a 1981 Lancet report, and a 1987 study of sleeping and waking over 24 hours in people with severe long-term insomnia. No modern study has repeated them.
- Selank: 62 patients. It calmed anxiety about as well as medazepam, and it also acted as a stimulant.
- Epitalon: no proper sleep study in people. Its record in people is Russian anti-ageing research.
- The blend: no published study and no listed trial.
What this does not tell you: Two forty-year-old studies are not a current evidence base. How sleep is studied, measured and reported has changed beyond recognition since then. And the fact that nobody has tried to repeat them in modern times tells you something too.
What do people who took DSIP with selank and epitalon report?
This is what real people say happened to them, good and bad. Nobody measured it. A report cannot tell a real effect from the lift people get just from expecting it to work, from a diet or training change made at the same time, or from what was really in the vial. We still put it near the top. It is the next best thing to a study in people: what happens when real people use it, including what goes wrong.
- Falling asleep faster and waking less. This is the most common report and the reason people buy it.
- Very vivid dreams.
- Grogginess the next morning in some people, and none in others.
- Nothing at all. This comes up often.
- Feeling wired, not sleepy. A few people report this, and it fits with the stimulant effect found in the selank study.
Sources: Peptide and nootropic forums including r/peptides, and vendor pages. Uncontrolled self-reports. The psychostimulant observation is the one item here that also appears in a controlled trial, for the selank component.
The state of the research
The interesting question about DSIP is why nobody repeated the work. The 1980s studies were positive. The peptide is cheap and nobody can patent it. And forty years went by. The most likely reason is the same one that runs through this whole site. Nobody could own the result, so nobody paid for the study. That is a money fact about the molecule, not a verdict on it. It leaves a buyer with evidence that cannot be checked against modern standards.
The mix itself is the second issue. Eighty nine percent of the peptide is the two ingredients with no modern sleep evidence. The other eleven percent is the one ingredient with a real study in people, and that study found it acted as a stimulant. A product built the other way round would be easier to defend.
Sleep is also an area where user stories are especially weak. What people expect, changes to their routine, and simply paying attention to sleep all change how well people feel they slept.
The evidence, in charts
Fig. 1a · how many people
62people, across 1 study in people cited here
| Study | People | Share |
|---|---|---|
| Zhurnal Nevrologii i Psikhiatrii imeni S.S. Korsakova 2008 | 62 | 100% |
The whole total is one study of 62. Counts are the number of people each study on this page says it signed up. That includes studies that only watched people and gave nobody the compound. 2 more studies in people give no headcount and are not counted here. Studies still signing people up are left out, and only studies cited on this page are counted.
Fig. 1b · evidence mix
3 of 4 sources here are studies in people. The rest is not.
- Study in people · done in people375%
- Review of studies · sums up other studies125%
Counted from the list of sources on this page. It counts only what we cite, so there may be more studies out there. A review counts once, however many studies it sums up.
Fig. 2 · evidence over time
The studies cover 4 different years, 1981 to 2025, counted from the list of sources on this page.
Fig. 3 · legal status at a glance
US
Not approved
UK
Not approved
AU
Not approved
CA
Not approved
Not approved in any of the four countries shown. This is what the law says, not a verdict on the science. See Legal status below for the full text and any notes.
Fig. 4 · how much does what
Nobody has tested different amounts in people
This chart would show how the effect changes as the amount goes up. For this compound, nobody has measured that in people. So we leave it empty. We will not borrow an animal chart and pretend it works the same in people.
Fig. 5 · what the molecule is
- Kind of compound
- Blend
- Molecule weight
- Not on file
- Half-life
- Stated in words, not a numbersee the exact wording below
- Chain length
- None on file
Half-life as stated on file: Not defined for the blend. DSIP is described as clearing rapidly and no pharmacokinetic study of the mixture exists.
No amino acid sequence is on file for DSIP with selank and epitalon, which is expected: a blend is not built from amino acids.
Fig. 6 · what is in the vial
44.4%of a 4.5 mg DSIP with selank and epitalon vial is DSIP
What the label says is in a standard vial. It is not a dose, and not a lab test. The seller fixes the mix, so when you draw the amount you want of one ingredient, you get a set amount of every other one with it. No study has tested this mix in people or animals.
The studies we cite
- Study in people1981Synthetic delta-sleep-inducing peptide improves sleep in insomniacs
Every sleep claim made for DSIP goes back to one short report from 1981. It said lab-made DSIP improved sleep in people with insomnia. It was published as a letter, not a full paper. Nothing since has confirmed it. More than forty years on, no modern proper study of this peptide for sleep exists. Treat it as an old claim that was never properly followed up, not as a settled finding.
The 1981 Lancet report from Schneider-Helmert and colleagues that established the sleep claim for synthetic DSIP in insomniacs, indexed by PubMed as a randomised clinical trial published as a letter. It is the origin of every sleep claim made for this peptide and it has not been replicated in a modern controlled trial.
- Study in people1987Effects of delta-sleep-inducing peptide on 24-hour sleep-wake behaviour in severe chronic insomnia
The second and last real sleep study of DSIP in people was run in the 1980s. It followed people with severe long-term insomnia across a full 24 hours of sleeping and waking. That makes it the most detailed look anyone has taken. Together with the 1981 report, it is the whole sleep record in people for this peptide. Nothing like it has been published in the four decades since.
A controlled clinical trial examining DSIP across 24 hour sleep-wake behaviour in severe chronic insomnia, the most detailed of the 1980s DSIP sleep studies. Along with the 1981 Lancet report it is the whole of the human sleep record for this peptide, and nothing comparable has been published since.
- Study in people2008[Efficacy and possible mechanisms of action of a new peptide anxiolytic selank in the therapy of generalized anxiety disorders and neurasthenia]
Selank eased anxiety about as well as an older anti-anxiety drug, in a small Russian study. 62 patients were treated, 30 on selank and 32 on medazepam, with similar results on standard anxiety scales. One detail matters in a product sold for sleep. Selank also acted as a mild stimulant in that study, lifting energy and alertness. There was no dummy group, and no team outside Russia has repeated the work.
62 patients with generalised anxiety disorder and neurasthenia, 30 on selank against 32 on medazepam. Anxiolytic effects were similar between the two drugs, and selank additionally showed antiasthenic and psychostimulant effects. The psychostimulant finding is worth noting in a product sold for sleep.
- Review of studies2025Overview of Epitalon-Highly Bioactive Pineal Tetrapeptide with Promising Properties
This is a review of the claims made for epitalon, a tiny peptide linked to the pineal gland. It draws mostly on cell work and Russian bioregulator research. It sums up claims. It does not report a proper study in people, and it is not a sleep study.
A review of the claimed properties of the pineal tetrapeptide epitalon, drawing largely on cell work and the Russian bioregulator literature. It is a summary of claims rather than a report of a controlled human trial, and it is not a sleep study.
Where to buy DSIP with selank and epitalon
15 sellers list DSIP with selank and epitalon in our latest read. They are ranked by trust score, then by archive rating, then by certificate tier, then by the lowest price per milligram. Archive evidence is counted before source-backed. Each path is out of 4, and the two are not added. A higher price does not raise the score. The letter is the certificate chip. 0 of them have a published certificate that names DSIP with selank and epitalon.
Some seller links may pay this site when you buy through them. A payment never changes a seller's tier or rank, and no seller has a say in any page.
| Seller | Trust score | Vial sizes | From, per mg | Certificate for DSIP with selank and epitalon | Seller link |
|---|---|---|---|---|---|
| National Science Labs | 80 StrongSource-backed 4 of 4. Archive evidence 2 of 4.A | 5 mg, 10 mg, 15 mg | $3.13 | None found for DSIP with selank and epitalon | View |
| Nationwide Peptides | 80 StrongSource-backed 4 of 4. Archive evidence 2 of 4.A | 5 mg, 10 mg, 15 mg | $3.13 | None found for DSIP with selank and epitalon | View |
| Onyx BioLabs | 80 StrongSource-backed 4 of 4. Archive evidence 2 of 4.A | 10 mg | $9.00 | None found for DSIP with selank and epitalon | View |
| LIVV | 73 StrongSource-backed 4 of 4. Archive evidence 2 of 4.A | 5 mg | $29.8 | None found for DSIP with selank and epitalon | View |
| Simons RX | 70 StrongSource-backed 4 of 4. Archive evidence 2 of 4.A | 5 mg | $19.0 | None found for DSIP with selank and epitalon | View |
| Luxe Peptides | 49 WeakSource-backed 3 of 4. Archive evidence 2 of 4.A | 5 mg, 10 mg, 15 mg | $5.00 | None found for DSIP with selank and epitalon | View |
| Peptides Kingdom | 49 WeakSource-backed 3 of 4. Archive evidence 2 of 4.A | 5 mg | $8.00 | None found for DSIP with selank and epitalon | View |
| Peptify Labs | 49 WeakSource-backed 3 of 4. Archive evidence 2 of 4.A | 5 mg | $10.00 | None found for DSIP with selank and epitalon | View |
| Sports Technology Labs | 49 WeakSource-backed 3 of 4. Archive evidence 1 of 4.B | 5 mg | $4.70 | None found for DSIP with selank and epitalon | View |
| Top Peptides | 45 WeakSource-backed 2 of 4. Archive evidence 1 of 4.C | 5 mg | $6.00 | None found for DSIP with selank and epitalon | View |
| Royal Peptides | 43 WeakSource-backed 1 of 4. Archive evidence 1 of 4.C | 5 mg | $9.00 | None found for DSIP with selank and epitalon | View |
| Limitless Biotech ST | 36 WeakSource-backed 1 of 4. Archive evidence 1 of 4.C | 5 mg, 10 mg, 15 mg | $3.13 | None found for DSIP with selank and epitalon | View |
| Republic Peptide | 33 WeakSource-backed 1 of 4. Archive evidence 1 of 4.C | 5 mg | $6.60 | None found for DSIP with selank and epitalon | View |
| Nova Life Peptides | 33 WeakSource-backed 1 of 4. Archive evidence 1 of 4.C | 5 mg | $7.80 | None found for DSIP with selank and epitalon | View |
| Polaris Peptides | 15 InsufficientSource-backed 1 of 4. Archive evidence 0 of 4.Letter withheld | 12.5 mg | $3.20 | None found for DSIP with selank and epitalon | View |
- LC Lab-confirmed: the issuing laboratory echoed this certificate back
- A Current certificate, independent laboratory named, laboratory not yet checked
- B Certificate published, but no laboratory link, older than a year, or the laboratory did not recognise the published lookup
- C No certificate could be read
Every listing and vial size for DSIP with selank and epitalon · How the trust score is counted
Sellers named on the price pages are ranked by certificate tier, then price, and any affiliate income is disclosed there. Naming a seller is not a recommendation to buy or use anything.
Common questions
Has DSIP with selank and epitalon been tested in people?
Yes. 62 people given it across 1 completed trial cited here, 0 of which found nothing. A sleep and body clock blend, usually 2 mg DSIP, 2 mg epitalon and 0.5 mg selank.
What is the DSIP with selank and epitalon dosage?
No human dose established. Amounts that were given in studies sit in Human evidence on this page. None of them is a personal dose. 1 completed trial, 62 people given it
Is DSIP with selank and epitalon FDA-approved?
None of the three is approved in the United States. Selank is a registered medicine in Russia. DSIP and epitalon are not registered medicines in Western countries.
Is DSIP proven to work for sleep?
It has a 1981 Lancet report and a 1987 study in people with severe long-term insomnia, and nothing since. That is not nothing. It is also not a current evidence base by any modern standard.
Why is there no recent research?
The most likely reason is that nobody can patent the peptide. So no company has a money reason to pay for a study. That is a money fact about the molecule, not a finding about whether it works.
Does epitalon help sleep?
No proper study in people has tested that. Its research in people is Russian anti-ageing work. It is in a sleep blend because of the pineal gland's link to the sleep hormone melatonin, not because of sleep data.
Why is a stimulating peptide in a sleep blend?
That is a fair question. The study on selank found it lifted energy and alertness and acted as a stimulant, as well as calming anxiety. It is the smallest ingredient by weight, about a ninth of the peptide. But it is the one with the clearest study in people.
What is the split?
Usually 2 mg DSIP, 2 mg epitalon and 0.5 mg selank. That is 4.5 mg of peptide, with the first two at 44.4% each and selank at 11.1%.