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DSIP

Also called Delta Sleep Inducing Peptide

An old, lightly studied sleep peptide you inject at night, with thin proof it works.

Updated 03 May 2026Read 3 minBacked by 60 studies

The quick version

What it is: A nine-piece peptide found in animals during deep sleep
Is it FDA-approved?: No. Not approved anywhere
How strong is the proof?: Weak: small, old, mostly animal studies
How you take it: A small shot under the skin, nightly before bed
Typical result: Some people sleep better, many feel nothing
Biggest catch: The evidence has barely grown since the 1980s

Any word with a dotted underline is a science word — tap it for a plain-English meaning.

In plain words.

DSIP stands for Delta Sleep Inducing . It is a short peptide, made of nine amino acids (the small building blocks of peptides).

Scientists first pulled it from rabbit blood in 1977, during deep "delta wave" sleep. The idea was that this helps cause deep sleep.

It is not a hormone, and it does not have a clear target in the body. It is not and not approved anywhere. People buy it online as a sleep aid.

What people use it for.

People use DSIP to try to sleep better. It is popular with shift workers, new parents, and anyone whose sleep is a mess.

Some people coming off alcohol, benzos, or opioids try it when their sleep does not bounce back.

Does it actually work?

Honestly, we do not really know. The proof is small, old, and mostly from animals.

There are zero good human trials for sleep in healthy adults. There are a few small, loose reports from the 1980s in people with long-term insomnia or opioid withdrawal. The bulk of the file is animal brain-wave studies. About 30 animal sleep studies exist.

DSIP seems to be a "works for some, not for others" molecule. The science has barely moved since 1985. So the most honest read is: it might help you, it might do nothing.

what you’ve probably heard.

The claims floating around online, and how true they actually are.

“DSIP knocks you out and fixes insomnia.”

unproven

It is a works-for-some molecule. Some people sleep better, plenty feel nothing, and there are zero good human sleep trials in healthy adults to sort out which you'll be.

“It's well studied, scientists have known about it since the 70s.”

not quite

It was pulled from sleeping rabbits in 1977, but the science barely moved since 1985. The bulk of the file is about 30 animal brain-wave studies.

“It's non-habit-forming with no side effects.”

mostly true

No clear side effects have been reported, partly because so few people have been studied. Some users still wake up groggy the next day.

“Anyone with bad sleep can just inject this and fix it.”

If you snore and might have sleep apnea, a nightly shot is the wrong tool and can mask a breathing problem. Get checked before reaching for any sleep .

How you take it.

You take it as a small shot under the skin. This is a shot. It is not a pill or a nasal spray. If you wanted something to swallow, this is not it.

First you mix the dry powder. The vial comes (freeze-dried), and you add to dissolve it. This step is called .

The community dose is 100 mcg each night, about 30 minutes before bed. You draw it up with a small and inject the belly or thigh.

What to watch out for.

The common stuff

No clear side effects have been reported. But that is partly because so few people have been studied. Some users notice next-day grogginess.

The serious stuff

If you take benzos, opioids, or other things that slow your brain down, tell your prescriber before adding this. Mixing sleep drugs can be risky.
Do not skip a sleep apnea check. If you have apnea (when you stop breathing during sleep), a is the wrong fix.

A smart move: track your sleep with a wearable like Oura or an Apple Watch for two weeks before you start. That gives you a real baseline. If your deep and REM sleep have not moved after 4 to 8 weeks of nightly use, stop. Do not keep going hoping it kicks in.

If anything feels wrong, talk to a real doctor. We are not your doctor.

Where people get it.

Here are the lanes, safest to riskiest.

Brand. None. No DSIP exists.
. Rare. Most pharmacies do not stock it. A few boutique ones do, around $80 to $160 a month.
Research-only (). The main supply, about $30 to $70 a month. Cheap, but no promise of what is in the vial. You mix it yourself.
. Available overseas for a few dollars a month, but demand is tiny and it rarely shows up.

If you buy research-only, ask for a , a lab report showing what is really in the vial.

Our honest take.

A sleep peptide that has barely changed since 1985

Scientists pulled it from sleeping rabbits in 1977, ran a handful of small human reports in the 1980s, and then the science just stopped. For some people it knocks them flat. For plenty of others it does nothing. There is no way to know which one you are until you try it.

So treat it as a clean experiment, not a treatment. Put two weeks of sleep on a wearable first, so you have a real before-picture. Dose it nightly, and if your deep and REM numbers have not moved by week 8, stop instead of chasing it.

One hard line: if you snore and might have sleep apnea, get that checked before reaching for any sleep shot. A will not fix breathing that keeps stopping in the night.

The studies behind this.

We read the research so you don't have to. Here's where the facts on this page come from.

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KPV

Anti-inflammatory · RUO

We're not your doctor, and this isn't medical advice. It's a plain-English summary of what the research says, so you can have a smarter conversation with someone who is.

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