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
¡Bienvenido! Por ahora el sitio está en inglés – la edición en inglés del libro está disponible en amazon.es.
Science-based · updated 19 Oct 2026
What the new peptide medicines achieve – in trial numbers.
Results first, sources always: we chart the landmark trials and track the newest studies every week.
TreatmentPlacebo
RetatrutideTRIUMPH-1 · 80 wk¹
25.0%
3.9%
TirzepatideSURMOUNT-1 · 72 wk¹
20.9%
3.1%
CagriSemaREDEFINE 1 · 68 wk
20.4%
3.0%
SemaglutideSTEP 1 · 68 wk
14.9%
2.4%
¹ Highest-level treatment group. Different trials, durations and populations – not a head-to-head comparison.
Sources: TRIUMPH-1 · NEJM 2026 · SURMOUNT-1 · NEJM 2022 · REDEFINE 1 · NEJM 2025 · STEP 1 · NEJM 2021
| Average weight loss in landmark trials | Trial | Treatment | Placebo |
|---|---|---|---|
| Retatrutide | TRIUMPH-1 | 25.0% | 3.9% |
| Tirzepatide | SURMOUNT-1 | 20.9% | 3.1% |
| CagriSema | REDEFINE 1 | 20.4% | 3.0% |
| Semaglutide | STEP 1 | 14.9% | 2.4% |
The research, visualised
Three things the data shows
| GLP-1 | GIP | Glucagon | Amylin | |
|---|---|---|---|---|
| Liraglutide1× | ||||
| Semaglutide1× | ||||
| Tirzepatide2× | ||||
| Retatrutide3× | ||||
| CagriSema2× |
Source: Peptilex 1, profile overview (type of each peptide)
20%fewer heart attacks, strokes or cardiovascular deathsSELECT · 17,604 people · NEJM 2023
24%fewer major kidney eventsFLOW · 3,533 people · NEJM 2024
Sources: SELECT · NEJM 2023 · FLOW · NEJM 2024 · ESSENCE · NEJM 2025
TreatmentComparison
GHK-Cu gelMedian wound closure · Mulder et al.
98.5%
60.8%
Thymosin alpha-1Complete response, chronic hepatitis B · Chien et al.
40.6%
9.4%
Sources: Mulder et al. · Wound Repair Regen 1994 · Chien et al. · Hepatology 1998
Go deeper
La edición en inglés en amazon.es
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.
Peptides A–Z
34 peptides, one evidence scale
One Peptilex evidence grade per peptide for its main use – from approved medicine (A) to mainly cell studies (E). Tap a peptide to see its research.
AApproved medicine, large randomized trials
BRandomized human trials
CSmall or early human studies
DMainly animal studies
EMainly cell studies
Source: Peptilex evidence grades A–E (Peptilex 1, Appendix A; tracked peptides: weekly review)
Available worldwide
Peptilex in 9 Amazon stores
Choose your country – we show the right store for you.
- United Statesamazon.com · EnglishSuggested
- Germany, Austria & Switzerlandamazon.de · DeutschSuggested
- United Kingdom & Irelandamazon.co.uk · EnglishSuggested
- Canadaamazon.ca · EnglishSuggested
- Australia & New Zealandamazon.com.au · EnglishSuggested
- Franceamazon.fr · EnglishSuggested
- Spainamazon.es · EnglishSuggested
- Italyamazon.it · EnglishSuggested
- Netherlands & Belgiumamazon.nl · EnglishSuggested
Your country is not listed? amazon.com ships books to many countries.
Latest update · 19 Oct 2026
New in peptide research
Meta-analysisNew
Tirzepatide for adults living with obesity
Cochrane Database of Systematic Reviews · 2025
Meta-analysisNew
Efficacy and safety of triple hormone receptor agonist retatrutide for the management of obesity: a systematic review and meta-analysis
Expert Review of Clinical Pharmacology · 2025
Systematic reviewNew
Human evidence for BPC-157 in orthopaedic and regenerative medicine: a systematic review of efficacy and safety
Acta Orthopaedica Belgica · 2026
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