Supplement Facts Panel Design: FDA Requirements and Design Best Practices
The Supplement Facts panel is the most regulated visual element on any dietary supplement label sold in the United States. Governed by the Dietary Supplement Health and Education Act (DSHEA, 1994) and implementing FDA regulations at 21 CFR Part 101.36, the Supplement Facts panel has precise requirements for layout, typography, line weights, minimum sizes, content, and daily value format — all of which must be met exactly to ensure compliance and avoid FDA warning letters.
What DSHEA Requires
Mandatory Elements
A compliant Supplement Facts panel must include:
- Serving size (in common household measure and metric equivalent)
- Servings per container
- Amount per serving for each declared nutrient
- % Daily Value (% DV) where an established daily value exists
- † footnote for nutrients without established daily values: "† Daily Value not established"
- A footnote stating: "* Percent Daily Values are based on a 2,000 calorie diet" (if calorie-based nutrients are declared)
Typography Requirements
FDA 21 CFR 101.36 specifies typography constraints:
- Minimum type size: 6pt for all text within the panel (down from 8pt if the principal display panel is less than 40 square inches)
- Helvetica Narrow Bold or a similar bold sans-serif required for the 'Supplement Facts' heading
- The panel must use a single typeface (Helvetica or a compatible sans-serif recommended)
- Leading (line spacing) must maintain legibility
Line Weights
A 1pt rule at the top and bottom of the panel is required. A 1/4pt rule separates individual nutrients.
Box Requirements
The panel must be enclosed within a box. The box border must be heavy enough to be clearly visible against the label background.
Daily Values and % DV Calculation
The % Daily Value declared for each nutrient must use the Reference Daily Intakes (RDIs) and Daily Reference Values (DRVs) published by FDA in 21 CFR 101.9(c)(8). FDA updated these reference values in 2016 (effective January 2020 for large manufacturers, January 2021 for small manufacturers).
Key updated RDIs relevant to supplements:
- Vitamin D: 20 mcg (800 IU)
- Calcium: 1,300 mg
- Iron: 18 mg
- Vitamin C: 90 mg
- Vitamin A: 900 mcg RAE
Rounding rules apply: % DV must be rounded to the nearest whole number. Declare as "< 2%" if the % DV is between 0% and 2%. Declare as "0%" only if the nutrient level per serving is at the threshold for zero declaration.
Structure/Function Claims and DSHEA Disclaimer
If your supplement carries a structure/function claim (e.g., "Supports immune health", "Promotes energy metabolism"), FDA requires a specific disclaimer on the label:
"This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease."
This disclaimer must:
- Appear prominently and conspicuously on the label
- Be in bold type
- Be placed immediately adjacent to the structure/function claim, or placed on the information panel
Designing a Compliant Supplement Facts Panel
The design challenge is meeting all FDA typographic requirements while maintaining visual appeal and brand cohesion:
1. Start with the template: FDA publishes official Supplement Facts panel templates. Use these as your starting point and ensure all required elements are present before adding any visual design.
2. Colour: The panel background must be white or neutral light colour; black type on white is required. A lightly tinted background (very pale grey or brand-neutral pale tone) is acceptable if it maintains sufficient contrast.
3. Placement: The Supplement Facts panel must appear on the information panel (the panel to the right of the principal display panel when the package is held facing the consumer) or the back panel. It cannot appear on the front (principal display panel).
4. Minimum size: The panel must use the largest type size and formatting that fits within the available label space, subject to the 6pt minimum. Cramming a Supplement Facts panel into a space too small to accommodate it is not an option — redesign the label layout to accommodate the required panel size.
5. Electronic bar code: If a barcode is included on the information panel, it must not obscure or crowd the Supplement Facts panel.
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