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DSIP vs Selank

Updated 5 sources

Key differences

  1. 1Selank is an intranasal anti-anxiety peptide used at 250 to 500 mcg; it helps sleep indirectly by calming the mind. DSIP is aimed at sleep itself.

Side by side

Facts from each record, in the same words as their own pages.
DSIP and Selank side by side
DSIPSelank
Category
  • Sleep
  • Cognitive, Sleep
Evidence
  • Limited human data
  • Limited human data
FDA status
  • Not FDA approvedRegulatory
  • Not FDA approvedRegulatory
WADA
  • Not confirmed
  • Not confirmed
Half-life
  • About 8 minutes in human plasma per FDA; 5 to 10 minutes in human serum in the lab and 2 to 6 minutes in animals.Regulatory
  • 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
  • Subcutaneous injection, Nasal, Intravenous (IV)
  • Nasal, Subcutaneous injection
Forms
  • Vial (powder), Nasal spray
  • Nasal spray, Vial (powder)
Reported doses
  • 25 to 1,000 mcg (subcutaneous injection)
  • 20 to 40 mcg (nasal)
  • 21.3 to 21.4 mcg/kg (intravenous (iv))
  • 150 to 2,700 mcg (nasal)
  • 200 to 1,000 mcg (subcutaneous injection)
Most cited frequency
  • Once nightly
  • Once daily
Vial sizes
  • 2 mg, 5 mg, 10 mg, 15 mgCompetitor guide
  • 5 mg, 10 mg, 30 mgCompetitor guide
Mixed vial keeps
  • Keep the mixed vial at 2 to 8 C, away from light, and do not freeze and thaw it.Competitor 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
  • 20
  • 24

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

Read each in full

Sources

5 sources, each checked by date. Record updated Oct 23, 2026. Numbers are restated in our own words and labelled by where they came from.

Competitor guide1

  1. Peptides for sleeppeptidesexplorer.com · checked Oct 23, 2026