Mechanism Explainers
Semax and Selank are almost always mentioned in the same breath — two synthetic peptides from the same Russian research program, both stabilized the same way, both studied for the nervous system. That shared origin is exactly why they get confused. But they are different molecules, built from different natural precursors,
Mechanism Explainers
Selank is the sister compound to Semax — developed by the same Russian research group, built on the same design principle, but derived from an entirely different natural molecule and studied for a different set of questions. This overview covers what Selank is, where it came from, what the published literature
Mechanism Explainers
Semax is one of the most-studied synthetic peptides to come out of Russian neuropeptide research, yet it remains largely unknown in the West. This overview covers what Semax is, where it came from, what the published literature has actually examined, and how researchers evaluate the quality of a reference
Myth vs. Evidence
TL;DR: "99% pure" and "research-grade" are common phrases in the peptide space, and they're often read as a stamp of safety. But purity and safety are different questions. A certificate of analysis (COA) tells you what a compound is and how much
Study Breakdowns
TL;DR: In 2023, The New England Journal of Medicine published a Phase 2 randomized controlled trial of retatrutide, an investigational triple-receptor agonist, in adults with obesity. Rather than just report the result, this article uses that paper as a worked example of how to read a clinical study
TL;DR: BPC-157 is a synthetic 15-amino-acid peptide derived from a protein found in gastric juice. It's one of the most-studied compounds in the tissue-repair research literature — but nearly all of that research is in cells and animals, not humans. This explainer covers
FAQ / Knowledge Base
TL;DR: Peptide research moves through distinct stages — in vitro, animal (preclinical), and human (clinical) studies — and each stage answers a different question with a different level of certainty. Knowing which stage a finding comes from is the single most useful thing for judging how much weight it deserves. When
Research News
TL;DR: "Microdosing" GLP-1 medications — taking smaller-than-standard amounts, often spaced further apart — has become one of the biggest trends in weight-loss and biohacking communities. Surveys suggest roughly 1 in 7 GLP-1 users now do it. But it's important to be clear-
Myth vs. Evidence
TL;DR: "GLP-1 drugs make you lose muscle" is one of the most-discussed concerns in weight-loss and biohacking communities. The evidence-based picture is more nuanced: GLP-1 medications do reduce lean mass, but this happens proportionally alongside fat loss — the way it does with
Study Breakdowns
TL;DR: A 2026 medRxiv preprint analyzed self-reported side effects from Reddit users taking unapproved retatrutide — and found the pattern differs notably from the drug's clinical trials. Where Phase 2 data were dominated by gastrointestinal effects, the Reddit reports most often described appetite increase, fatigue, increased energy,
Mechanism Explainers
TL;DR: A receptor agonist is a molecule that binds to a specific receptor on a cell and switches it "on," triggering a response. Many research peptides are described as agonists of one or more receptors. This article explains what that means, how agonists differ from antagonists, and