Good Source vs High In vs More: Nutrient Claims Explained

This article is informational only and is not medical advice. It explains how to read US food labels, not what you personally should eat.

"Good source" means one serving has 10 to 19 percent of the Daily Value for that nutrient. "High," "rich in," and "excellent source" mean 20 percent or more. "More" means at least 10 percent of the Daily Value above a comparison food. These definitions come from FDA's rule at 21 CFR 101.54, read in the current eCFR as of October 2026.

1. The three claim levels

The rule measures every claim against a fixed yardstick: the Reference Daily Intake (RDI) for vitamins and minerals, or the Daily Reference Value (DRV) for nutrients such as protein, fiber, and potassium. On the label, these appear as the percent Daily Value (%DV). The rule applies the percentage "per reference amount customarily consumed," which is the standard amount FDA assigns to a food category.

Notice that "contains" and "provides" are on the 10 to 19 percent tier. A box that says "provides calcium" is not claiming to be a major source; it is using the same words as "good source."

A food with less than 10 percent of the Daily Value cannot use any of these terms. The rule also leaves total carbohydrate out of these claims. FDA's Food Labeling Guide adds that a nutrient with no established Daily Value cannot be called "high" or a "good source"; a label may say "contains 2 grams of omega-3 fatty acids per serving" but not just "contains omega-3 fatty acids," which would be a disguised good-source claim.

2. A simple example with made-up numbers

Suppose a nutrient has a Daily Value of 100 milligrams (an invented figure used only for the arithmetic). A serving would need 10 to 19 milligrams to be a "good source" and 20 or more to be "high." A serving with 19 milligrams is a good source, one with 20 is high, and one with 9 can use neither phrase.

This is also why two similar crackers can carry different words on the front. One serving might sit at 18 percent and the other at 22 percent. Check the %DV line in the Nutrition Facts panel and compare it to the front-of-package wording.

3. "More" claims need a named comparison

A "more" claim is a relative claim, so it must show what it is being compared with. Under the rule, a "more," "extra," or "plus" claim for protein, vitamins, minerals, dietary fiber, or potassium requires at least 10 percent more of the Daily Value per reference amount than an appropriate reference food. The label has to declare the reference food and the percentage next to the most prominent claim. The rule's own example reads "contains 10 percent more of the Daily Value for fiber than white bread."

It must also give the numbers side by side, near the claim or the nutrition label. The rule's example is "Fiber content of white bread is 1 gram (g) per serving; (this product) 3.5 g per serving." If a label says "extra fiber" and never names a comparison, the claim is incomplete.

When the extra nutrient was added to the food, the fortification must also follow FDA's fortification policy in 21 CFR 104.20, according to the same section.

4. Fiber claims come with a fat disclosure

There is one extra requirement for fiber. If a product claims to be high in fiber, a good source of fiber, or to contain "more" fiber, and the food is not low in total fat as FDA defines it, the label must state the total fat per serving. The disclosure goes in immediate proximity to the claim, in type at least half the size of the claim. The rule's sample wording is "contains [ x amount ] of total fat per serving. See nutrition information for fat content."

So a front panel that shouts "high fiber" and also carries a small line about fat per serving is following the rule, not hiding something.

5. Meal products work differently

For meal products and main dish products, FDA does not apply the percentages to the whole entree. Instead, the product must contain a food that meets the "high" or "good source" definition, and the label must clearly say which food that is. The rule's examples are "the serving of broccoli in this product is high in vitamin C" and "the serving of sweet potatoes in this product is a good source of fiber." A frozen dinner with a "good source of fiber" banner should therefore name the component that earns it.

6. How to use this at the shelf

1. Find the claim on the front of the package.
2. Turn to the Nutrition Facts panel and read the %DV for that nutrient at the listed serving.
3. Match the number to the tier: 10 to 19 for "good source," 20 or more for "high."
4. If the claim says "more" or "extra," look for the named comparison food. No comparison, no valid claim.
5. Check the serving size. The percentages are measured per reference amount customarily consumed, which is what the serving size is built on, not per package.

7. Key takeaways

• "Good source," "contains," and "provides" mean 10 to 19 percent of the Daily Value per serving; "high," "rich in," and "excellent source" mean 20 percent or more.
• "More," "extra," and "plus" claims need at least 10 percent more of the Daily Value than a named reference food, with both foods' amounts shown.
• Fiber claims on foods that are not low in fat must be accompanied by a total fat statement per serving.
• Meal and main dish products must name the component that qualifies for the claim.
• Information current as of October 2026; verify wording in the eCFR if you need exact legal text.