How to Read a Supplement Label (And What to Ignore)

Most supplement labels bury the information that actually matters. Here's where to look — and what the fine print reveals about quality.

July 1, 2026Ingredient Guide

The ingredients panel is the whole story

The Supplement Facts panel on the back of a bottle tells you three things that matter: what's in it, how much, and in what form. Everything else — the front-panel claims, the brand name, the color scheme — is marketing.

Form matters more than dose

Magnesium oxide and magnesium glycinate are both labeled 'Magnesium.' One absorbs at roughly 4%, the other at 80%. The form is listed in parentheses after the nutrient name. If it's missing, that's a red flag.

Proprietary blends hide the dose

A proprietary blend lists ingredients but not individual amounts — only a total weight. This is legal but opaque. You cannot verify whether the active ingredient is present in a clinically meaningful dose.

Third-party testing closes the gap

FDA does not verify supplement labels before products reach shelves. Third-party testing (NSF, USP, Informed Sport, IFOS for fish oil) means an independent lab verified the label claim. Look for the certification seal or ask the brand for their CoA.

What Vantage Health shows you

Every product we carry lists the exact form of each ingredient, links to the batch Certificate of Analysis, and names the testing body. If we can't show you that, we don't carry it.

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