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N-Acetyl Selank Amidate vs Selank

Updated 12 sources

Key differences

  1. 1Same seven amino acids plus an acetyl cap and an amide cap, about 792.9 g/mol vs 751.9 for Selank.
  2. 2Selank has small Russian trials and a Russian registration; this variant has no study at all.
  3. 3A guide reports it as 2 to 3 times more potent with a 10 to 20 minute half-life vs 2 to 5; none of that is measured.
  4. 4Users split: one found plain N-acetyl Selank far better than the amidate.
  5. 5The claim that the acetylated form lasts longer is marketing logic with no published data behind it.
  6. 6User reports split: one says it is useless injected but strong nasally, another felt nothing.
  7. 7One user says it costs about 40% more per mg.

Side by side

Facts from each record, in the same words as their own pages.
N-Acetyl Selank Amidate and Selank side by side
N-Acetyl Selank AmidateSelank
Category
  • Cognitive, Sleep
  • Cognitive, Sleep
Evidence
  • No human trials
  • Limited human data
FDA status
  • Not FDA approvedRegulatory
  • Not FDA approvedRegulatory
WADA
  • Not confirmed
  • Not confirmed
Half-life
  • Not measured. One guide estimates 10 to 20 minutes, vs 2 to 5 minutes for Selank.Competitor guide
  • Not measured. Another guide claims 4 to 6 hours.Competitor guide
  • Minutes. Per the Russian label, nasal Selank shows in plasma within 30 seconds and its level falls over 5 to 5.5 minutes. Nothing shows up in urine.Regulatory
Routes
  • Nasal, Subcutaneous injection
  • Nasal, Subcutaneous injection
Forms
  • Nasal spray, Vial (powder)
  • Nasal spray, Vial (powder)
Reported doses
  • 100 to 900 mcg (nasal)
  • 500 to 750 mcg (subcutaneous injection)
  • 150 to 2,700 mcg (nasal)
  • 200 to 1,000 mcg (subcutaneous injection)
Most cited frequency
  • 2 to 3 times a day at regular intervals (600 to 900 mcg a day)
  • Once daily
Vial sizes
  • 30 mg, 10 mgCommunity-reported
  • 5 mg, 10 mg, 30 mgCompetitor guide
Mixed vial keeps
  • Fridge at 2 to 8 C, out of light.Vendor guide
  • Guides disagree on how long mixed Selank keeps: 2 to 3 weeks, 3 to 4 weeks, or 21 to 30 days.Competitor guide
Protocols on file
  • 6
  • 24

Doses shown are what sources report, labelled by origin. Not medical advice.

Read each in full

Sources

12 sources, each checked by date. Record updated Oct 24, 2026. Numbers are restated in our own words and labelled by where they came from.

Regulatory4

  1. Selank 0.15% nasal drops (Russian label)Vidal, via a reference work · checked Oct 24, 2026
  2. Selank instruction for use (Russian label)selank.ru (Peptogen), archived copy, via a vendor guide · checked Oct 24, 2026
  3. Certain bulk drug substances for use in compounding that may present significant safety risksFDA · checked Oct 24, 2026
  4. Bulk drug substances nominated for use in compounding under section 503A (updated May 14, 2026)FDA · checked Oct 24, 2026

Vendor guide1

  1. N-Acetyl Selank Amidate (Adalank) research vialdisguisedalpha.com · checked Oct 24, 2026

Competitor guide3

  1. N-Acetyl-Selankbodyhackguide.co · checked Oct 24, 2026
  2. Selank dosage guide (N-Acetyl Selank Amidate section)peptidesexplorer.com · checked Oct 24, 2026
  3. NA-Selank Amidatepeptide-db.com · checked Oct 24, 2026

Community-reported4

  1. r/Nootropics: Selank/NA-Selank/NA-Selank-Amidate (comment)r/Nootropics · checked Oct 24, 2026
  2. Selank subq vs nasal (comment)r/Peptides · checked Oct 23, 2026
  3. Selank subq vs nasal (comment)r/Peptides · checked Oct 23, 2026
  4. Is N-acetyl Selank Amidate worth the extra costr/Biohackers · checked Oct 23, 2026