The Supplement Facts Panel: Format Rules, Examples, and Common Errors

The supplement facts panel is the part of a supplement label buyers, regulators, and consumers read most closely. It tells you what a serving is and how much of each dietary ingredient that serving delivers. It is also the part of the label where small formatting mistakes pile up, and where an experienced buyer can spot an under-built label in about ten seconds.

The rules live in 21 CFR 101.36. Below is a practical breakdown of what the regulation requires, a worked example for a gummy, and the errors that come up most often when a product line is reviewed.

Supplement Facts Panel Requirements: The Core Parts

Every panel is built from the same components, in the same sequence, set inside a box with hairlines and heavier bars separating sections.

• Title: the words 'Supplement Facts', set larger than any other type in the panel.
• Serving size: stated in the unit the consumer takes, such as '2 Gummies' or '1 Softgel' or '1 Scoop (5 g)'.
• Servings per container: generally required, unless the net quantity statement already expresses it in the same terms.
• Column headings: 'Amount Per Serving' and '% Daily Value' (a column for %DV appears when any listed ingredient has a Daily Value).
• Dietary ingredients with a Daily Value: listed with their amount and %DV, in the order FDA prescribes.
• Dietary ingredients without a Daily Value: listed below, with amounts and a dagger symbol pointing to 'Daily Value not established'.
• Footnotes: the dagger footnote and, when certain macronutrients are declared, the percent Daily Value footnote.

Ingredient order and units

Nutrients that have Daily Values follow a fixed sequence: calories and macronutrients first (fat, sodium, carbohydrate, sugars, protein), then vitamins, then minerals, in the order set out in the regulation. You list only the ones actually present in meaningful amounts. Unlike a Nutrition Facts label, a Supplement Facts panel should not list nutrients present at zero or at levels that round to zero.

FDA's 2016 labeling update changed several units. Vitamin A is declared in mcg RAE, vitamin D in mcg, vitamin E in mg, and folate in mcg DFE, with folic acid shown in parentheses when it is the source. Vitamin D may also show IU in parentheses. Labels still using IU as the primary unit for vitamin D, or plain 'mcg' for folate, are out of date.

Sources and botanicals

You can name the source of a dietary ingredient in the panel, for example 'Vitamin C (as ascorbic acid)' or 'Zinc (as zinc citrate)'. When you do, that source does not need to repeat in the Other Ingredients list. For botanicals, the panel must identify the part of the plant used, such as elderberry fruit or ashwagandha root, and the amount should reflect what is actually in the serving, whether that is extract weight or dried herb equivalent, described accurately.

Supplement Facts Panel Examples

Here is a simplified example for a hypothetical two-gummy serving. It shows how macronutrients, vitamins, minerals, and a botanical without a Daily Value sit together.

The asterisk points to the footnote that percent Daily Values are based on a 2,000 calorie diet, which is required here because carbohydrate is declared. The dagger means Daily Value not established. Gelatin or pectin, citric acid, flavors, and colors would appear below the panel under Other Ingredients. The percentages above check out against FDA's current Daily Values: 90 mg vitamin C and 11 mg zinc are each 100 percent, and 3 g of added sugars is 6 percent of 50 g.

Proprietary Blends and Alternate Formats

A proprietary blend lets a company list the total weight of a blend without disclosing the amount of each component. The components must be listed in descending order by weight. Any dietary ingredient in the blend that has a Daily Value still has to be declared with its amount in the upper part of the panel. Many buyers treat heavy use of proprietary blends as a yellow flag, not because it is illegal but because it makes it harder to compare products and verify potency against a COA.

Format can flex with package size. The standard vertical layout is the default. A tabular layout, which places the panel side by side, is allowed when the package cannot fit the vertical version. Very small packages may use a linear format. Products intended for specific groups, such as children under four or pregnant and lactating women, use Daily Values for that group, and a product with different dosing for different groups can use multiple %DV columns.

Common Errors on the Supplement Facts Panel

These are the mistakes that come up repeatedly when labels are reviewed. Most are easy to fix before print and expensive to fix after.

1. Old units, such as vitamin D in IU only or folate without DFE.
2. Listing nutrients at zero, such as 'Sodium 0 mg', which belongs on a Nutrition Facts label, not a supplement panel.
3. Missing 'Includes Added Sugars' on gummies, chews, or powders that contain added sugars.
4. %DV shown for ingredients that have no Daily Value, instead of a dagger.
5. Botanicals listed without the plant part.
6. Serving size that does not match the suggested use directions on the same label.
7. %DV math errors after a formula change, where amounts were updated but percentages were not.
8. Using a 'Nutrition Facts' heading on a product sold as a dietary supplement.

If the serving size on the panel and the directions on the side of the bottle disagree, a buyer will assume other things are wrong too.

How Buyers Use the Panel

For a buyer, the panel is a specification. It is what the product promises, and it is what the certificate of analysis should confirm. When you review a supplier's line, compare the declared amounts against a lot-specific COA and look for testing that covers each label-claim ingredient. Our guide on how to read a certificate of analysis walks through that comparison. For the full set of required label elements beyond the panel, see dietary supplement label requirements.

RV Pharma publishes the Supplement Facts panels for its stock gummies and softgels on each product page, and lot-specific COAs are available on request. That makes it straightforward to review exactly what you would be stocking before placing an order.