About This Reference Desk

What Sigma A Peptides is

Sigma A Peptides is an independent editorial reference desk covering the published research on two peptides studied for cognition, focus, mood, and anxiety: Selank and Semax, with Selank as the lead. The site exists to make a scattered, regionally concentrated, and frequently overstated literature legible — to tell a reader, in plain language and with citations, what each compound was actually studied for, in which species, and how far that evidence reaches.

The organizing idea is a two-compound pair that approaches cognitive biology from complementary directions: Selank via anxiety reduction and GABAergic modulation, Semax via neurotrophin upregulation and neuroprotection. Each compound has its own page; a comparison page lines them up; and a single shared references list aggregates every source.

Anecdotal community reports of effects are collected and presented where they exist, on each compound page, under a clear and explicit label that they are anecdotal, not clinical evidence. They are presented separately from cited research findings, not mixed in with them. The reasoning for including them at all is transparency: these are the first-person accounts a researcher, journalist, or informed reader will encounter in the real world, and a digest that pretends they do not exist is less useful than one that presents them accurately framed.

How it is compiled

Three principles govern what appears on this site.

First, everything is anchored to the peer-reviewed literature. Every research claim is tied to a numbered citation — PubMed-indexed journal articles and reviews, with DOIs or PubMed links — collected on the references page. Where a finding comes from a review rather than a primary study, the review is cited as such.

Second, the evidence is reported at its true strength. Doses are described in the species and route in which they were studied — for example, "studied at 50 micrograms per kilogram in rats" — never scaled to humans or offered as a recommendation. Where evidence is preclinical, single-lab, or originates from a single research region without independent replication, the page says so plainly. The single-region character of both Selank and Semax research is not a footnote; it is a central fact.

Third, the two pages are cross-referenced. Because the same biology — GABA systems, enkephalin stabilization, neurotrophin signaling, intranasal delivery — recurs across compounds, the pages link to one another so a reader can follow a mechanism from one peptide to the next.

What it is not

Sigma A Peptides is not a store, not a clinic, and not a source of medical advice. It does not sell, supply, source, or broker any peptide or research chemical, and it has no affiliate or referral relationship with any vendor. It does not employ clinicians, diagnose conditions, or prescribe anything. It does not recommend a dose, schedule, or route of administration for any person, and it never frames an animal-study dose as something a human should take.

The peptides discussed here are research compounds. Neither is an approved medicine in the United States or Europe; Selank has regulatory registration only in Russia, Semax only in Russia and Ukraine. Anxiety that is persistent or impairing is a medical condition with established, evidence-based treatments — this site is not a substitute for that care. Readers seeking treatment for any condition should consult a licensed clinician operating within their own jurisdiction.