Topic
The literacy column. Proprietary blends, third-party testing, bioavailability, and the arithmetic of cost per serving — the tools you need to judge everything else on this site.
Our lens: How to read a label and price a serving.
A blend is legal, common, and makes a product impossible to evaluate. That last part is the point.
Supplement ScienceSix checks, in order. Most products fail one of the first three, which means you can stop reading and put the bottle down.
Supplement ScienceNSF, Informed Sport and USP test different things. "Made in a cGMP facility" tests nothing about your bottle.
Supplement ScienceCost per serving, adjusted for whether the serving contains a real dose. Everything else on the shelf is designed to prevent you doing this.