The peptide journal

Small molecules.
Bigger questions.

Peptide science, made easier to understand. Explore the research, evidence, and questions behind the headlines.

In focus · Metabolic research

Retatrutide.
Beyond the headlines.

Understand the triple receptor agonist, its investigational status, and the questions to ask about new trial results.

September 21, 20263 min read

Original sourcesEvidence in contextPlain-language explanations

A little more context. A better understanding.

5 articles

Metabolic research

Understand the triple receptor agonist, its investigational status, and the questions to ask about new trial results.

Evidence check

Why promising experiments, small human reports and established clinical evidence are different things.

Skin science

A closer look at topical copper-peptide evidence, study endpoints, and why skin-care findings do not validate injections.

Clinical studies

What the SURMOUNT-5 trial found, which population it studied, and why averages are not individual predictions.

The fundamentals

Peptides connect amino acids, but the word alone tells you little about a product’s purpose, evidence or approval.