Guides

Shop for supplements with your eyes open.

Plain answers on spotting fakes and reading the seals on a label, with links to the official sources.

How to spot counterfeit supplements online

Where to buy, how to check a marketplace seller, what to look for on the bottle, and where to report a product that seems wrong.

FDA doesn't approve supplements before sale. Here is what sourcing, GMP and product-testing seals each cover, and how to check one.