Dietary supplements serving size (FDA RACC)

The FDA reference amount (RACC) for dietary supplements is The maximum amount recommended, as appropriate, on the label for consumption per eating occasion or, in the absence of recommendations, 1 unit, e.g., tablet, capsule, packet, teaspoonful, etc. The label states the serving as “__ tablet(s), __ capsules(s), __ packet(s), __ tsp(s) (__ g), etc.”, with your product’s numbers filled in.

No. The RACC is the reference amount FDA sets for the whole category. The serving size is what your label declares, in pieces or a household measure plus grams or mL, worked out from the RACC for your product.

When a product is packaged and sold on its own and the package holds 200% to 300% of the RACC, the label shows two columns: per serving and per package. A package under 200% of the RACC is a single serving, so the whole package is the serving.

Servings per container is rounded to the nearest whole number, or to the nearest half between 2 and 5 servings. FDA lets a label put “about” in front of the rounded number.

• Dietary supplements reference amount: 21 CFR 101.12 Table 2, as of 2026-02-12.
• Serving size, servings per container, single-serving and two-column rules: 21 CFR 101.9(b), as of 2026-02-12.
• Plain-language guide: FDA: Serving Size on the Nutrition Facts Label.
• Dataset: bm-regulatory US Nutrition Label Rules v17.0.0.