TCW illustrated field note · 16
Know what you are comparing
A quick reference for reading the peptide landscape.
The guide, in text
Approved medicine
Check the exact product, indication and label. Approval does not transfer to every seller’s vial.
Investigational compound
Clinical development is not marketing approval. Examples include cagrilintide and retatrutide.
Early research
A proposed mechanism or animal result does not establish a benefit in people.
Topical versus injectable
Different routes need different evidence. A skin-care claim does not validate an injection.
Names and blends
NAD+, B12 and branded mixtures are not interchangeable peptide categories. Identify every ingredient.
Sources + context
Source review: September 2026. Illustrations explain concepts; they do not verify products or replace individualized advice.