The Definitive Peptide Research Reference Guide — Compound Review

Home Compounds BPC-157 TB-500 CJC-1295 Ipamorelin GLP-1 GHK-Cu Epithalon NAD+ Comparisons BPC-157 vs TB-500 Sermorelin vs Ipamorelin Semaglutide vs Tirzepatide Guides GHK-Cu Guide GHRH Analogues Ipamorelin Guide Peptide Reconstitution Guide Peptide Injection Sites Guide Peptide Storage Guide Semaglutide Dosage BPC-157 Dosage Research Guides Joint Pain Weight Loss Longevity Vendor Scoreboard All Vendor Comparisons Peptide Price Comparison Vendor Closures & Status How to Read a Peptide COA How to Vet a Peptide Vendor Why Purgo Labs Purgo Labs Review Purgo Labs Discount Code Where to Buy by Compound Legal Status Shop Purgo Labs

Are Peptides FDA-Approved?

Some peptides are FDA-approved drugs. Most research peptides are not. This guide explains the difference, which compounds have approval, what the 2023 compounding guidance changed, and what 'not approved' actually means for research use.

FDA-Approved Peptides

These peptides have completed the full FDA approval process — preclinical studies, Phase I/II/III clinical trials, and NDA/BLA review. They are legally available as prescription drugs for their approved indications.

Research Peptides: Not FDA-Approved

These are the most commonly researched peptides. None have received FDA approval for human use. They are legal to purchase and use for laboratory research in the United States.

The FDA Drug Approval Process

The process takes 10–15 years and costs $1–2 billion on average — which is why many promising research compounds never reach the market despite significant preclinical evidence.