Comparison
Carbetocin vs. Selank
Two peptides side-by-side — identity, evidence base, legal status and known adverse events.
Identity
Category
Research other
Research other
CAS no.
37025-55-1
129954-34-3
Molecular weight
no data
751.85 g/mol
Half-life
0.67 h
0.3 h
Sequence
no data
Thr-Lys-Pro-Arg-Pro-Gly-ProMechanism of action
Carbetocin
Carbetocin is an oxytocin receptor agonist with prolonged duration. It triggers a sustained contraction of the uterus after birth, preventing atonic hemorrhage — unlike oxytocin, without a multi-hour infusion.
Selank
Selank is a glyproline-tuftsin analog. Proposed mechanisms include modulation of the GABAergic system, effects on serotonin bioavailability, and influence on enkephalinases. Animal studies show anxiolytic and neuroprotective markers; a clear receptor target is not established.
Evidence base
Highest evidence
Human RCT
Human trial
Studies
1
4
of which in humans
1
2
Effects recorded
2
3
Open conflicts
0
1
Documented adverse events
1
1
Legal status
Full entries
Frequently asked questions
- What is the difference between Carbetocin and Selank?
- Carbetocin is classified as "Research other", while Selank is classified as "Research other". Carbetocin: Carbetocin is a long-acting synthetic oxytocin analog (half-life ~40 minutes). It prevents postpartum hemorrhage as a single injection. Approved in Canada and the UK among others, NOT in the US. Selank: Synthetic heptapeptide derived from natural tuftsin. Approved as an anxiolytic (Selank) in Russia and some CIS states. Western phase-3 trials are absent; efficacy assessment relies on Russian research literature. This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Carbetocin or Selank?
- The highest available evidence level is "Human RCT" for Carbetocin and "Human trial" for Selank. A higher evidence level means more robust data, but says nothing about suitability for an individual. The full body of evidence is on each peptide's own page.
- What is the legal status of Carbetocin and Selank in Germany and the United States?
- Germany: Carbetocin — Prescription, Selank — Unapproved. United States: Carbetocin — Unapproved, Selank — Unapproved. These are factual summaries with source and review date on the individual pages.