"They're my main source of fiber".
It's a good source of fiber for people who have trouble going to the bathroom".
Are the Maisy Mouse books a good source of fiber for babies?
Whole grains are complex carbohydrates and an excellent source of fiber.
They have small amounts of vitamins A and C, selenium and potassium, and are a reasonable source of fiber.
And as a good source of fiber, beans can help lower cholesterol, too.
Even that box of double-chocolate Krave is stamped "Good source of fiber and whole grain".
Spelt is an excellent source of manganese and a good source of fiber, vitamin B3, protein and copper.
The pads of the cactus are not only a good source of fiber but also are high in calcium and vitamins A and C, as are its fruits.
A label can claim a food is a "good source" of fiber if it delivers 10% of your daily dose of fiber about 2.5 grams per serving.
The terms "rich in," "high in," or "an excellent source of" fiber are allowed if the product contains 5 or more grams of fiber per serving.
