Paste the Supplement Facts panel or snap a bottle photo to expose hidden proprietary blends, low-absorption synthetic forms, and industrial fillers.
FDA rules require ingredients inside a proprietary blend to be listed in descending order by weight. If a 500 mg blend lists 5 ingredients, the fifth ingredient cannot legally exceed 100 mg—and is often "fairy-dusted" at a tiny fraction of an effective dose.
Two labels can both claim "400 mg Magnesium" or "500 mcg Vitamin B12" while using vastly different raw materials. SuppDecoder flags low-absorption salts (like Magnesium Oxide or Cyanocobalamin) and highlights chelated or methylated forms.
The fine print beneath the Supplement Facts box reveals binders, high-speed manufacturing lubricants, whitening pigments like Titanium Dioxide, and synthetic dyes that add zero nutritional value to the formula.