How much water do I add to N-Acetyl Selank?

You can reconstitute N-Acetyl Selank with 0.5, 1, or 2 mL of bacteriostatic water. Each option produces a different concentration and syringe draw for the same dose. Use the calculator to see which is easiest to measure.

What does N-Acetyl Selank cost per dose?

Cost per dose depends on vial size, price paid, and your dose. Enter your vendor's price in the N-Acetyl Selank calculator to see cost per dose and monthly cost.

What is the reference dose for N-Acetyl Selank?

The commonly referenced range is Research only, taken no established schedule. This is reference information, not a recommendation. Talk to a licensed clinician.

What are the side effects of N-Acetyl Selank?

Reported side effects of N-Acetyl Selank include: No study has tested this version. What is known about side effects comes from Selank itself.; Sold under research-use-only labelling.. Severity and frequency vary by person and dose.

Who should not take N-Acetyl Selank?

N-Acetyl Selank is generally not appropriate for: No contraindications have been established for this version; Pregnancy or breastfeeding. Talk to a licensed clinician before starting.

Do you cycle N-Acetyl Selank?

No established pattern No published human study establishes a schedule.

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Decoding

N-Acetyl Selank_Dosage, benefits & legal status

Also known as NA-Selank, NA Selank, Selank NA

By the Peptide Decoding Editorial Team

Published September 29, 2026

Selank with one end capped rather than both, and no study of its own.

Calm & anxietySelank variantResearch only

InBrain, mood and sleepTaken without a needle

Common vial size10 mg

DoseResearch only

FrequencyNo established schedule

RouteNasal spray, or injected under the skin

StatusResearch only

MixYour choice, calculate it

CycledNo established pattern

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 →

What is N-Acetyl Selank?

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

Overview

Selank with a cap on one end. Its sibling, the amidate, has caps on both ends, and neither has been studied as a product in its own right.

The technical version

N-Acetyl Selank is Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) with N-terminal acetylation. Seller descriptions state the acetylation and do not describe C-terminal amidation, which is what distinguishes it from N-Acetyl Selank Amidate; the two differ in mass by about one dalton. No peer-reviewed study of the acetylated-only form was found.

What it's used for

Sold as a vial or nasal spray for anxiety and calm focus, on the strength of Selank's own research.

How does N-Acetyl Selank work?

What it does in the body, and where.

This is Selank with one end capped. The cap is meant to slow the enzymes that break Selank down.

01
Peptides are cut from their exposed ends
Enzymes that clear peptides from the body often start at the ends of the chain, which is part of why Selank acts only briefly.
02
An acetyl group covers the starting end
The other end is left as it is in Selank. N-Acetyl Selank Amidate caps that end too, with an amide.
03
The two names are easy to confuse
They differ by one small group and about one unit of mass. A certificate of analysis that reports the measured mass, not just a pass mark, is how to tell which one a vial holds.
04
Nobody has measured the effect of the cap
No published study compares this version with Selank, so any claim that it lasts longer or works better is untested.

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 and stress, borrowed from Selank's own studiesnone

The published record

Research index

Papers and trials about N-Acetyl Selank

Europe PMC was searched on 29 September 2026 and returned nothing.

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

Compound field notes

At a glance

Four things to know about N-Acetyl Selank

Evidence

Research only

How much, and do you cycle it?

The range, and whether you take breaks.

Research only, no established schedule. No established patternNo range

No published human study establishes a schedule.

Compare this against the whole library →

How long does it stay in the body?

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

Nothing published in humansNo figure

Not measured for this version.

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

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 (mg)

Commonly referenced range: Research onlyNo range

Choose your mix

0.5 mL water—units · 20 mg/mL

Half a 100-unit syringe

1 mL water—units · 10 mg/mL

One full 100-unit syringe

2 mL water—units · 5 mg/mL

Two full 100-unit syringes

your own mL

units · —

Enter your own volume

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

YOUR DRAW0 / 100 units

Full calculator with reorder date →Read a syringe →

What it costs

N-Acetyl Selank starts at $44.99 across 6 vendors, typically $4.50 – $7.10 per mg.

8 listings, last read Sep 27, 2026. Shipping and card fees are not included.

See all 8 listings →

How do you store it?

Before mixing, and after.

Fridge after opening. Use within about 30 days.

Store sealed N-Acetyl Selank 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.

What are the side effects and cautions?

Known cautions and warnings for this compound.

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 contraindications have been established for this version
Pregnancy or breastfeeding

Stop and get help

These are emergencies. Seek care.

Signs of an allergic reaction such as face or throat swelling, hives, or trouble breathing

Common effects

Expected, and usually mild.

Not characterised for this version

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

Is N-Acetyl Selank approved?

And where the numbers on this page come from.

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

Approval status
Research only
Route
Nasal spray, or injected under the skin
Checked
29 September 2026
Dose
From research and community reports. No regulator has reviewed this dose.
Vial size
From what vendors typically list; not a recommendation.
Sources
None traced yet.

What has happened recently

Not approved anywhere, and no published study names this version.

You can compare this against the whole library, or read how to check a seller.

What else is like N-Acetyl Selank?

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

If you're weighing N-Acetyl Selank, it's worth reading Adamax 984, Semax, and Selank in the same class.

YOU ARE HERE

N-Acetyl Selank

Selank with one end capped rather than both, and no study of its own.

Research only

Dose: Research only
How often: No established schedule

ADAMAX-984

Adamax 984

A second molecule sold as Adamax: acetylated Semax with two amino acids added and no adamantane.

Research only

Dose: Research only
How often: No established schedule

SEMAX

Semax

A peptide used 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

Selank

A peptide 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

Browse peptides for focus, mood, and sleep Compare oral, nasal, and topical peptides

Guides for this compound

How to Reconstitute a Peptide
Mix peptide powder with bacteriostatic water, step by step.
How to Read an Insulin Syringe
Read the units, convert to millilitres, and draw the exact dose.
mcg vs mg: The Peptide Dosing Mistake to Avoid
Your vial says mg and your protocol says mcg. Here is the conversion and how to check it.
How to Read a Peptide COA
What the purity number does and does not tell you, and how to spot an edited report.
How to Vet a Peptide Vendor
Independent COAs, HPLC purity, and the red flags that mean walk away.

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

Last reviewed 29 September 2026