// Background Reading

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Before diving into individual entries, this is where the foundational concepts, terms, and editorial approach live.

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What is a peptide?
The basics — what makes a peptide different from a drug, a protein, or a hormone, and why it matters for how these compounds behave.
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How to read the evidence
What "preclinical," "Phase 3," and "FDA approved" actually mean — and the evidence-strength bar used on every entry.
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Glossary
Quick definitions for recurring terms — GLP-1, GHRH, melanocortin receptor, angiogenesis, and more.
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Common combinations
Peptides that are frequently discussed or studied together, and what's actually known about combining them.
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Methodology
How entries get written, sourced, and reviewed — and where the limits of this project are.
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News
What's actually happening in peptide regulation and research right now, linked to primary reporting.
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FDA-approved tracker
A running list of every entry on this site that currently holds FDA approval for at least one indication.