Tools

Four tools on the same data as the rest of the site: the 116,682 products in the NIH Dietary Supplement Label Database (January 2026 release), the FDA Daily Values and the adult upper limits.

• Dose checkerType an amount from a label: see where it sits among every product listing that ingredient, against the Daily Value and the adult upper limit.
• IU to mcg, and the other label unitsVitamin D between IU and micrograms; vitamin A, E, folate and niacin label units, each factor with its source.
• Barcode lookupFind a product by the digits under its barcode.
• Compare two productsTwo labels side by side, ingredient by ingredient.