How to read a supplement label like a skeptic

Start with the dose, not the ingredient

An impressive ingredient at a fraction of its studied dose is marketing, not formulation. For every active you care about, find the amount used in the research that made it famous — then check the label against it. "Contains X" and "contains enough X to matter" are different claims.

Forms matter more than names

Many nutrients come in several chemical forms with very different absorption. A label that specifies the form is a label written for readers; one that lists only the generic name is written for shelves.

Treat proprietary blends as a red flag

A "proprietary blend" discloses the total weight but not the split — which legally allows a blend to be almost entirely its cheapest component. There are occasionally legitimate reasons, but the default assumption should be cost-optimization, not trade secrets.

What a trustworthy label looks like

Named forms, exact doses per active, a third-party testing mark, and a lot number you could actually look up. Anything less asks for your trust; this earns it.