N-Acetyl Selank_Dosage, benefits & legal status
Also known as NA-Selank, NA Selank, Selank NA
Selank with one end capped rather than both, and no study of its own.
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.
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.
- 01Peptides are cut from their exposed endsEnzymes that clear peptides from the body often start at the ends of the chain, which is part of why Selank acts only briefly.
- 02An acetyl group covers the starting endThe other end is left as it is in Selank. N-Acetyl Selank Amidate caps that end too, with an amide.
- 03The two names are easy to confuseThey 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.
- 04Nobody has measured the effect of the capNo 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
0
Papers about N-Acetyl Selank · this compound only
Searched: N-acetyl Selank, acetyl-Selank, NA-Selank.
Left out: NA-Selank (vendor shorthand, appears in no journal).
Europe PMC was searched on November 15, 2026 for these terms and returned nothing.
Counted from Europe PMC indexing, not read by a person.
At a glance
Four things to know about N-Acetyl Selank
Evidence
Category
Brain, mood and sleep
Common vial
10 mg
Half-life
Nothing published in humans
How much, and do you cycle it?
The range, and whether you take breaks.50 up to 200 mcg per dose, once daily to start in reports. No established pattern No range
No published human study establishes a schedule.
Nothing published in humansNo figure
Not measured for this version.
You can compare this against the whole library to see where it sits.
How is it given?
Dosing context and source notes.Two firsthand nasal-spray reports describe 50 to 200 mcg per administration. One started at 50 mcg daily, later used 100 mcg morning and evening, and felt unwell after 200 mcg. The other describes worsened anxiety after one 200 mcg use. These reports do not establish a safe or effective dose. No human-study dose exists for N-acetyl Selank itself; human evidence belongs to native Selank.
Reported dose: 50 mcg–200 mcg / dose.
Firsthand community report, 2026-07-20
Firsthand report dated 2026-07-20: https://www.reddit.com/r/Nootropics/comments/1v1nsgt/looking_for_advice_for_na_selank_nasal_dosage/; Firsthand report dated 2026-03-29: https://www.reddit.com/r/Nootropics/comments/1s791c1/selank_causingamplifying_anxiety/ Also circulates: roughly 250–300 mcg; this is not a firsthand bound in the verified reports.
Two firsthand nasal-spray reports describe 50 to 200 mcg per administration. One started at 50 mcg daily, later used 100 mcg morning and evening, and felt unwell after 200 mcg. The other describes worsened anxiety after one 200 mcg use. These reports do not establish a safe or effective dose. No human-study dose exists for N-acetyl Selank itself; human evidence belongs to native Selank.
N-Acetyl Selank starts at $44.00 across 12 vendors, typically $2.97 – $7.10 per mg.
15 listings, last read Nov 15, 2026. Shipping and card fees are not included.
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
- No contraindications have been established for this version
- Pregnancy or breastfeeding
Stop and get help
- Signs of an allergic reaction such as face or throat swelling, hives, or trouble breathing
Common effects
- Not characterized 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 labeled for laboratory research only, and there is no legal route to buy it for human use.
- Approval statusResearch only
- RouteNasal spray in the reports cited here
- Checked8 November 2026
- DoseFrom community reports. No regulator or trial established this dose.
- Vial sizeFrom what vendors typically list; not a recommendation.
- Sources
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 Phenibut, Adamax 984, and 9-ME-BC in the same class.
Selank with one end capped rather than both, and no study of its own.
- Dose
- 50 up to 200 mcg per dose
- How often
- Once daily to start in reports
A Russian anxiety drug sold as a nootropic. Stopping it suddenly can be dangerous.
- Dose
- No safe self-directed dose is established
- How often
- Not daily, if at all
A second molecule sold as Adamax: acetylated Semax with two amino acids added and no adamantane.
- Dose
- Research only
- How often
- No established schedule
A beta-carboline sold as a brain booster, with real lab effects on dopamine cells and no human trials at all.
- Dose
- 10 up to 20 mg per day
- How often
- Daily
Guides for this compound
- 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
- Firsthand community report, 2026-07-20(2026)Two firsthand nasal-spray reports describe 50 to 200 mcg per administration. One started at 50 mcg daily, later used 100 mcg morning and evening, and felt unwell after 200 mcg. The other describes worsened anxiety after one 200 mcg use. These reports do not establish a safe or effective dose. No human-study dose exists for N-acetyl Selank itself; human evidence belongs to native Selank.
- Firsthand community report, 2026-03-29(2026)Two firsthand nasal-spray reports describe 50 to 200 mcg per administration. One started at 50 mcg daily, later used 100 mcg morning and evening, and felt unwell after 200 mcg. The other describes worsened anxiety after one 200 mcg use. These reports do not establish a safe or effective dose. No human-study dose exists for N-acetyl Selank itself; human evidence belongs to native Selank.