Peptilex

Peptides, explained.

34 peptides · 10 tracked weekly · real studies

What retatrutide, BPC-157, GHK-Cu and co. can do – the most exciting results from real studies, and where each one stands right now.

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Study tracker

The 10 most talked-about peptides – registered trials and the latest studies, updated every week (19 Oct 2026).

Retatrutide
Weight · Metabolism · Grade B
207Papers
10RCTs
32Trials
10Ongoing
Tirzepatide
Weight · Diabetes · Grade A
2,637Papers
134RCTs
189Trials
115Ongoing
Semaglutide
Weight · Heart · Kidney · Grade A
5,707Papers
311RCTs
477Trials
168Ongoing
CagriSema (Cagrilintide)
Weight · Grade B
121Papers
15RCTs
40Trials
17Ongoing
BPC-157
Healing · Gut · Grade D
226Papers
0RCTs
2Trials
1Ongoing
TB-500 / Thymosin beta-4
Healing · Eye · Grade D / B
629Papers
5RCTs
16Trials
2Ongoing
GHK-Cu (Copper Peptide)
Skin · Wounds · Grade C
178Papers
1RCTs
1Trials
1Ongoing
MOTS-c
Metabolism · Mitochondria · Grade D
264Papers
4RCTs
2Trials
1Ongoing
Epitalon
Longevity · Grade D
141Papers
0RCTs
0Trials
0Ongoing
Thymosin alpha-1
Immune · Grade B
622Papers
39RCTs
39Trials
11Ongoing

Free guides

Short PDF guides with the best parts of the book. No sign-up, no e-mail.

PEPTIDE

The 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.

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RETA

Retatrutide in 5 Minutes

The triple-hormone mechanism, the TRIUMPH results and what comes next.

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GLOW

GHK-Cu & the Skin Peptides

Copper peptide, Matrixyl, Argireline and collagen: what the skin studies found.

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HEAL

BPC-157 & TB-500: The Healing Peptides

The animal studies, the first human data and the trials now under way.

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Peptilex – The Peptide Encyclopedia, book cover

34 peptides. One book.

A science-based guide for beginners to 34 peptides: what each one does, the most exciting research results, and where it stands in 2026. Every profile: what it is, the most exciting results, key studies, risks and open questions.

KindlePaperbackHardcover