Articles
Plain-English guides to the rules, risks and research around peptides. Every fact links to its source: 400 in all, from the FDA, the CDC, drug labels, court records and published studies.
Staying safe
Measuring and injecting, warning signs, and what’s really in the vial.
How to inject peptides safely
Measuring units on an insulin syringe, where to inject, rotating sites, keeping vials clean and getting rid of needles.
GLP-1 and peptide side effects: when to see a doctor
Which symptoms mean call 911, which mean get care today, and which to raise with your doctor.
Research peptides vs compounded vs brand-name
What’s actually checked in each kind of vial, what lab tests of online peptides found, and what a certificate of analysis can prove.
Rules and the law
What FDA approval means, what sport bans, and the fight over retatrutide.
Which peptides are banned in sport?
What WADA bans by name, why almost every unapproved peptide is banned too, and the status of each peptide on this site.
Why most peptides aren’t FDA approved
What approval means, and why most peptides never go through it: patents, the cost of trials and the disease rule.
Why Eli Lilly is suing the FDA over retatrutide
The 40-amino-acid fight that could delay cheaper versions, where the case stands, and how to tell your senators what you think.
What’s coming
The obesity drugs still in trials, and when they might arrive.
Educational reference, not medical advice. For how we choose and check sources, see How we source.