How to read a Supplement Facts label

verdavita editorial team · 2026-11-04

A Supplement Facts label tells you how much of each ingredient is in one serving. Start with the serving size, then read the amounts, and treat any blend without individual amounts with more caution.

Start with the serving size

Every amount on the panel refers to one serving, not one capsule. If the serving size is three capsules, the listed amount is what you get from all three. Divide the servings per container into your routine to see how long a bottle really lasts.

Read the amount per serving

This column shows the quantity of each dietary ingredient, usually in mg, mcg or g. When two products look alike, this is the number to compare. Check the units as well: 1,000 mcg equals 1 mg.

What % Daily Value means

The % Daily Value compares the amount in a serving with a reference amount set for the label. It is a way to put a number in context, not a personal target. Many botanicals have no Daily Value, so you will see a symbol in that column instead of a percentage.

Look closely at proprietary blends

A blend can list its ingredients with one total weight for the whole group. You then know what is inside, but not how much of each ingredient. If individual amounts matter to you, choose a label that prints them.

Check the other ingredients

Below the panel you will find capsule materials, fillers and flow agents. This is also where to look if you avoid gelatin or other specific materials.

Know what the label does not tell you

The FDA does not approve dietary supplements before they are sold, so a label is not a sign of approval. Before starting a supplement, talk with your health care professional, especially if you take medication, are pregnant or are nursing.

Sources

General information, not medical advice.