Beginner guides, glossary and how-to-read-the-evidence explainers.
Guides & Peptides 101 is the on-ramp for new readers: what peptides are, how they differ from drugs, hormones and supplements, the major classes, what the evidence does and does not support, and the safety and legal ground rules. It also houses the glossary and the how-to-read-the-evidence explainers that the rest of the site links back to.
What peptides actually are, how they differ from drugs, hormones and supplements, the major functional classes, and — crucially — what the human evidence does and doesn't support, from Grade-A medicines to Grade C-D research peptides.
A source-cited definitional reference to the vocabulary of peptide, hormone, and longevity science — from receptor pharmacology and pharmacokinetics to manufacturing quality and the U.S. and anti-doping regulatory landscape.
A peptide is a short chain of amino acids that acts as a signaling molecule. Some hormones are peptides (insulin, for example), but "hormone" describes the biological role, not the chemistry. A dietary supplement is a regulatory category — vitamins, minerals, botanicals and certain other ingredients sold without drug approval; most research peptides are not legal dietary supplements and are not approved drugs either, which is why they occupy a gray zone. Peptides 101 walks through these distinctions so the rest of the site makes sense.
Start with the fundamentals: what peptides are, how the evidence is graded, and the safety and legal ground rules. Then read the encyclopedia monograph for any specific peptide you are curious about, paying attention to its evidence grade and legal status before anything else. The single most important habit is to check whether a claim rests on human trials or only on animal data — our grading makes that explicit, and Peptides 101 explains how to read it.
PeptideVox does not encourage experimentation with unapproved peptides. Most have minimal long-term human safety data, come from unregulated vendors with documented purity problems, and may be prohibited in sport or unauthorized for human use entirely. This site exists to inform — to explain what the evidence and the law actually say — not to encourage self-administration. Any decision about your health should be made with a licensed clinician who knows your medical history.
The majority of compounds documented here are not approved by the FDA for human use. Approved drugs (e.g. semaglutide, tirzepatide) are noted explicitly and require a licensed prescriber.
Many peptides — including BPC-157 and GHK-Cu in injectable form — are sold strictly "for research use only — not for human consumption." Purity, identity, and dosing of such products are not regulated or guaranteed.
Several compounds are banned in competitive sport under the WADA Prohibited List. Athletes risk sanction regardless of intent or formulation.
Always consult a qualified, licensed healthcare professional before considering any compound. Individual risk depends on your full medical context.
This content is for informational and educational purposes only · No physician–patient relationship is created · Evidence grades reflect published data as of the stated revision and may change.
