How to Read a Fiber Supplement Label

This guide explains fiber grams, serving size, source, sweeteners, other ingredients, and mixing directions.

Find the fiber amount

Start with dietary fiber per serving. Then check how many scoops, teaspoons, capsules, or packets make up one serving.

Identify the source

Look for psyllium, inulin, chicory root fiber, acacia fiber, resistant starch, or another named source. Different fibers have different texture and fermentability.

Read the full formula

Flavored powders can contain sweeteners, acids, colors, or flavors. Follow the mixing directions because some fibers thicken quickly and require a specific amount of fluid.

What to check before you choose a product

Read the serving size, ingredient list, amount per serving when provided, directions, warnings, and storage information. Keep ingredient research separate from claims about a finished multi-ingredient product.