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N-Acetyl Selank Amidate_Dosage, benefits & legal status

Also known as NA-Selank Amidate

Published August 14, 2026 · Updated October 4, 2026

A longer-lasting version of Selank, with no study of its own.

Calm & anxietySelank variantResearch only
Common vial size30 mg
DoseResearch only
Frequency1-2x daily
RouteNasal spray
StatusResearch only
CycledTaken in courses, usually 10 to 14 days, with breaks between

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

See how this dose compares across the library →

01

What is N-Acetyl Selank Amidate?

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

Overview

It is Selank built to last a bit longer, usually sold as a nasal spray.

The technical version

N-Acetyl Selank Amidate is a modified version of Selank, a Russian anti-anxiety peptide. Two small changes are made to the ends of the molecule so that enzymes take longer to break it down.

What it's used for

A nasal spray taken for anxiety and calm focus, a longer-lasting version of Selank.

02

How does N-Acetyl Selank Amidate work?

What it does in the body, and where.

This is Selank with its two ends capped. The capping is the only difference, and it is meant to buy time.

  1. 01
    Peptides get chopped up from the ends
    Enzymes called peptidases attack the exposed ends of a peptide first. That is usually what limits how long one lasts.
  2. 02
    An acetyl group blocks one end, an amide the other
    Both are small chemical caps. Neither changes what the peptide does, only how quickly it disappears.
  3. 03
    Lasting longer is not the same as working better
    No published study has compared this version against the original in a person, so the practical difference is unmeasured.
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.

  • Anxiety without sedation, which is its approved use in RussiaResearch only
  • Focus and mental clarity, often stacked with SemaxResearch only

The published record

Research index

0

Papers and trials about N-Acetyl Selank Amidate

Europe PMC was searched on 12 October 2026 and returned nothing.

Counted from Europe PMC indexing, not read by a person.

N-Acetyl Selank Amidate vial rendering
Compound field notes

At a glance

Four things to know about N-Acetyl Selank Amidate

01

Evidence

Research only

02

Category

Brain, mood and sleep

03

Common vial

30 mg

04

Half-life

Not established

04

How much, and do you cycle it?

The range, and whether you take breaks.

Research only, 1-2x daily. Taken in courses, usually 10 to 14 days, with breaks between Community practice

Course dosing follows the Russian clinical practice it comes from. No controlled study has compared it against continuous use.

Compare this against the whole library →

05

How long does it stay in the body?

The half-life, and where the figure comes from.

Not establishedCommunity practice

The modified version has not been characterized at all. Even plain selank rests on Russian-language work that reports effects rather than clearance.

Not yet traced to a primary source.

You can compare this against the whole library to see where it sits.

06

What does it cost?

Typical dose and cost, in plain numbers.

N-Acetyl Selank Amidate is not injected

It is taken nasal spray. No dose has been tested for this version. Vendor figures are carried over from Selank, and the whole point of the modification is that it behaves differently, so carrying the number across is not sound.

Cost per month
—
Cost per dose
—
Typical dose
250 mg–500 mg / dayCommunity practice
What it costs

N-Acetyl Selank Amidate starts at $29.00 across 8 vendors, typically $4.40 – $6.75 per mg.

9 listings, last read Oct 10, 2026. Shipping and card fees are not included.

See all 9 listings →
07

How do you store it?

Before mixing, and after.

Fridge after opening. Use within about 30 days.

Store sealed N-Acetyl Selank Amidate in the fridge. Once opened, keep it upright in the fridge and plan to finish it inside roughly 30 days. Keep it out of light and do not freeze the liquid.

08

What are the side effects and cautions?

Known cautions and warnings for this compound.
Handling note

This is the sister product to N-Acetyl Semax Amidate, and vendors that stock one almost always stock the other. The two are not interchangeable: Selank is for anxiety and Semax is for alertness, and the amidate versions keep that split.

Solubility, computed: 57% charged residues, 43% hydrophobic. Water usually sufficient.

A first-pass rule from peptide manufacturers' guidance. It does not account for disulfide bridges, salt form or how the powder was dried, and it predicts what should be easy rather than what will happen in your vial.

Who should avoid it

Check these before anything else.
  • No formal contraindications established outside Russia
  • Pregnancy

Stop and get help

These are emergencies. Seek care.
  • Signs of an allergic reaction

Common effects

Expected, and usually mild.
  • Mild nasal irritation, stinging, or dryness
  • An occasional metallic taste
  • Brief tiredness
  • No sedation, dependence, or withdrawal, unlike benzodiazepines
  • The list above is for Selank itself. Nothing has been published on this version.

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

09

Is N-Acetyl Selank Amidate approved?

And where the numbers on this page come from.

No. N-Acetyl Selank Amidate is not approved for any use, anywhere. It is sold labeled for laboratory research only, and there is no legal route to buy it for human use.

  • Approval status
    Research only
  • Route
    Nasal spray
  • Checked
    14 August 2026
  • Dose
    From community reports. No regulator or trial established this dose.
  • Vial size
    From what vendors typically list; not a recommendation.
  • Sources
    None traced yet.

What has happened recently

We have not yet written a full regulatory note for this compound. The status above is current as of the date shown.

Guides for this compound

Sources

No primary source has been traced for this compound yet. Treat everything on this page as unverified until one is. How we grade evidence