Comparison
Selank vs. Teriparatid
Two peptides side-by-side — identity, evidence base, legal status and known adverse events.
Identity
Category
Research other
Research other
CAS no.
129954-34-3
52232-67-4
Molecular weight
751.85 g/mol
4117.8 g/mol
Half-life
0.3 h
1 h
Sequence
Thr-Lys-Pro-Arg-Pro-Gly-ProSer-Val-Ser-Glu-Ile-Gln-Leu-Met-His-Asn-Leu-Gly-Lys-His-Leu-Asn-Ser-Met-Glu-Arg-Val-Glu-Trp-Leu-Arg-Lys-Lys-Leu-Gln-Asp-Val-His-Asn-PheMechanism of action
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.
Teriparatid
Teriparatide corresponds to the biologically active first 34 amino acids of human parathyroid hormone and binds the PTH-1 receptor on bone and kidney cells. The literature describes that intermittent receptor activation preferentially stimulates the activity of bone-forming osteoblasts, whereas continuously elevated PTH exposure (as in hyperparathyroidism) tends to favor bone resorption. This time-dependent difference is regarded as the mechanistic basis for the bone-anabolic effect observed in studies.
Evidence base
Highest evidence
Human trial
Human RCT
Studies
4
4
of which in humans
2
4
Effects recorded
3
3
Open conflicts
1
1
Documented adverse events
1
2
Legal status
Full entries
Frequently asked questions
- What is the difference between Selank and Teriparatid?
- Selank is classified as "Research other", while Teriparatid is classified as "Research other". 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. Teriparatid: Teriparatide is the recombinant N-terminal fragment 1-34 of human parathyroid hormone (PTH). It is regulatory-approved and studied in the scientific literature as a bone-anabolic agent for the treatment of osteoporosis. Unlike antiresorptive agents, studies attribute to it an effect that stimulates new bone formation. This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Selank or Teriparatid?
- The highest available evidence level is "Human trial" for Selank and "Human RCT" for Teriparatid. 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 Selank and Teriparatid in Germany and the United States?
- Germany: Selank — Unapproved, Teriparatid — Prescription. United States: Selank — Unapproved, Teriparatid — Prescription. These are factual summaries with source and review date on the individual pages.