What a peptide actually is
Amino acids, the amide linkage, and why the line between "peptide" and "protein" is a convention rather than a law of nature.
The library
Explainers
Everything we've published, newest first. Start with What a peptide actually is if you're new here — most of the rest assumes it.
How peptides became medicine: a short history
Toronto in 1921, du Vigneaud's oxytocin synthesis, Merrifield's resin beads, and the engineered therapeutics that followed.
The peptides your body already makes
Insulin, oxytocin, vasopressin, glucagon and the defensins — and why evolution keeps reaching for short chains when it needs to send a message.
Reading a clinical-trial abstract without a PhD
Phase, n, primary endpoint, control arm, blinding. Six fields tell you most of what you need to judge a result — here's what each one means.
Drug, supplement, or neither?
Why most peptides discussed online are none of the above. What the FDA's categories actually cover, and what "investigational" really means.
No, "peptide" is not a category of supplement
The word describes a chemical structure, not a product class or a health claim. Untangling one of the most durable misunderstandings we see.
From bench to bedside: the long middle
What happens between a promising cell-culture result and a drug anyone can be prescribed — and why the great majority never finish the trip.
New explainers, every other week
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