The PeptideU Library

Evidence-first peptide education.

2013 pages of plain-language, PubMed-cited peptide science: courses, guides, a glossary, physiology, and state-by-state law. Everything here is education, never medical or dosing advice.

7 min read

What are peptides?

Peptides are short chains of amino acids that act as signaling molecules in the body. Here's what they are, how they're studied, and how to read the evidence, without the hype.

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5 min read

How to read peptide research (without the hype)

A short, practical guide to reading peptide studies critically: trial size, what a mechanism is (and isn’t), and how to tell evidence from marketing.

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4 min read

Approved vs. research-use peptides: what the terms mean

“FDA-approved,” “research-use-only,” “RUO”: a plain-language explanation of what these labels mean and why the distinction matters.

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Compound Courses

278 pages
View all 278 compound courses →

Research Guides

1136 pages
View all 1136 research guides →

Glossary

392 pages
View all 392 glossary →

Physiology

168 pages
View all 168 physiology →

State Law & Consumer Education

27 pages
View all 27 state law & consumer education →

Medications

12 pages
View all 12 medications →