Daily Value (%DV)

What it is

The Daily Value (DV) is a reference amount of a nutrient set by the FDA for use on nutrition and Supplement Facts labels. On the label you usually see it as % Daily Value (%DV) — the percentage of that reference amount provided by one serving. It's designed to give a quick sense of whether a serving contributes a little or a lot of a nutrient.

What it does

• Puts a dose in context. "200% DV" means a serving provides twice the reference amount; "10% DV" means a modest contribution.
• Standardizes comparison. Because the DV is fixed, you can compare %DV across different products for the same nutrient.
• Helps you spot trivial vs. substantial amounts at a glance.

What it does NOT do

• It is not a personalized recommendation. The DV is based on a general reference (historically a 2,000-calorie diet for some nutrients); your actual needs may differ by age, sex, and health status.
• It is not the same as the Tolerable Upper Intake Level. A high %DV isn't automatically unsafe, and %DV doesn't tell you the ceiling — check the UL separately.
• It doesn't exist for every ingredient. Many botanicals and compounds (e.g. CoQ10, herbal extracts) have no established DV, so the label just lists the amount in mg. That's normal, not a red flag.

How to use it

• Use %DV as a fast gauge of how meaningful a nutrient amount is.
• For ingredients with no %DV, compare the milligram amount against researched doses instead.
• Don't confuse a high %DV with "better" — more is only useful up to the point of sufficiency.

Sources

1. US Food & Drug Administration. Daily Value on the Nutrition and Supplement Facts labels.
2. National Institutes of Health, Office of Dietary Supplements. Dietary supplements: what you need to know.