Peptilex – The Peptide Encyclopedia
All 34 peptides
A science-based guide for beginners to 34 peptides: what each one does, the most exciting research results, and where it stands in 2026. · 216 pages
Amazon store: amazon.com
Books & guides
Science-based books on Amazon and free PDF guides – grouped by topic.
Books
All 34 peptides
German edition
Peptilex – Das Peptid-Lexikon
All 34 peptides
The German edition: 34 peptides, what they do, the key research results and their status in Germany, Austria and Switzerland. · 246 pages
Amazon store: amazon.de
Weight & metabolism
Peptilex – The Honest GLP-1 Handbook
Weight & metabolism
Semaglutide, tirzepatide and the new pills, explained for adults over 50. · 172 pages
Coming soon
Free guides
PEPTIDEThe 10 Most Talked-About Peptides 2026
From retatrutide to GHK-Cu: the headline result, the evidence grade and the one open question for each of the ten peptides everyone is talking about.
Get the free guide
RETARetatrutide in 5 Minutes
The triple-hormone mechanism, the TRIUMPH results and what comes next.
Get the free guide
GLOWGHK-Cu & the Skin Peptides
Copper peptide, Matrixyl, Argireline and collagen: what the skin studies found.
Get the free guide
HEALBPC-157 & TB-500: The Healing Peptides
The animal studies, the first human data and the trials now under way.
Get the free guideGet the weekly update
New studies every week on Instagram, TikTok and YouTube.