How to Read a Supplement Label

A supplement label packs a lot into a small panel. Once you know where to look, comparing two products takes seconds.

Start with the serving size

Every number on the panel is per serving — and a serving might be two or three capsules, not one. A bottle of "120 capsules" at three per serving is really a 40-day supply. Always check this first.

% Daily Value (%DV)

The %DV tells you how much of a day's recommended amount one serving provides. Over 100% isn't automatically better; for some nutrients, consistently high doses aren't useful.

Active vs other ingredients

• Active ingredients are what you're buying — the vitamins, minerals, or compounds and their doses.
• Other ingredients are the fillers, capsule material, and flavorings. Shorter, recognizable lists are generally a good sign.

Red flags

• A "proprietary blend" that lists ingredients but hides individual doses.
• Claims that sound like a cure. Supplements support health; they don't treat disease.

Quality marks

Third-party testing seals (for example USP or NSF) mean an independent lab verified what's inside matches the label.

General information, not medical advice. Talk to a professional before starting something new.

Put it into practice across our vitamins & supplements.