Peptilex – The Peptide Encyclopedia
- 34 peptides – from semaglutide to BPC-157 – in one book
- An evidence grade (A–E) and the key studies for every peptide
- Where each one stands in 2026 – US, EU and Switzerland
About Peptilex & our method
What Peptilex is
Peptilex explains peptide research – from approved medicines like semaglutide to research peptides like BPC-157 – with the numbers from real studies, an evidence grade and the original source for every claim.
Where the data comes from
Every week our study database pulls new records from five public sources: PubMed and ClinicalTrials.gov (US National Library of Medicine), Europe PMC (EMBL-EBI), the EU clinical trials register CTIS (EMA) and Drugs@FDA. Key results come from the published trials and are checked against the Peptilex books, which went through two independent review rounds.
How we grade evidence
Each peptide carries one Peptilex evidence grade for its main use, from A (approved medicine, large randomized trials) to E (mainly cell studies). The grade describes how far the research has come – not the substance.
What we never do
No usage instructions, no sourcing information, no paid rankings. Product links are labelled; we do not link to prescription medicines.
AI notice
Texts are created with AI assistance (Claude) and are researched and edited by Peptilex.
Our sources
The evidence grades
- AA – Approved medicine, large randomized trials
- BB – Randomized human trials
- CC – Small or early human studies
- DD – Mainly animal studies
- EE – Mainly cell studies
Go deeper
All 34 peptides in one book
Every profile: what it is, the key studies, the evidence grade and where it stands in 2026.
Coming soonPeptilex – The Honest GLP-1 HandbookSemaglutide, tirzepatide and the new pills, explained for adults over 50.