PlainVitamins

Category

Fiber supplements

629 products in the NIH Dietary Supplement Label Database are fiber supplements, 479 of them on the market; they list psyllium fiber 55 times as often as supplements overall (22% against under 1%) (DSLD version 9.4.0, January 2026).

Data: NIH ODS Dietary Supplement Label Database, version 9.4.0, current labels; Daily Values 21 CFR 101.9.

What kinds of ingredient do fiber supplements list?

The share of fiber supplements listing at least one ingredient of each kind (how kinds are counted):

Fiber supplements: share listing each kind of ingredient

629 products; a product counts once per kind.

Fiber supplements: share listing each kind of ingredientFiber47%Botanicals33%Minerals29%Probiotic strains11%Vitamins10%Other compounds7%Fatty acids3%Fats and oils2%
Fiber supplements: share listing each kind of ingredientFiber47%Botanicals33%Minerals29%Probiotic strains11%Vitamins10%Other compounds7%Fatty acids3%Fats and oils2%
Fiber supplements: share listing each kind of ingredientFiber47%Botanicals33%Minerals29%Probiotic strains11%Vitamins10%Other compounds7%Fatty acids3%Fats and oils2%
Fiber supplements: share listing each kind of ingredientFiber47%Botanicals33%Minerals29%Probiotic strains11%Vitamins10%Other compounds7%Fatty acids3%Fats and oils2%
Fiber supplements: share listing each kind of ingredientFiber47%Botanicals33%Minerals29%Probiotic strains11%Vitamins10%Other compounds7%Fatty acids3%Fats and oils2%

Source: Supplement Facts rows of each product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0, by the ingredient category DSLD records.

What do fiber supplements contain?

Psyllium fiber is the single ingredient they list most (22% of them), then iron (18%) and potassium (17%). The table sets their median amount per serving against the median of every product listing the same ingredient.

Fiber supplements: the ingredients most often listed (629 products, DSLD version 9.4.0)
IngredientShare listing itMedian hereAll products
Psyllium fiber22%4.2 g1.47 g
Iron18%0.8 mg5 mg
Potassium17%40 mg99 mg
Calcium13%30 mg115 mg
Pectin11%100 mg86 mg
Psyllium (unspecified)11%1,500 mg750 mg
Oat Fiber11%1,350 mg375 mg
Guar9%2,350 mg651.5 mg
Inulin7%2,100 mg300 mg
Bacillus Coagulans5%53.33 mg20 mg
Fructo-Oligosaccharides5%1,975 mg185 mg
Vitamin C5%40 mg100 mg
Flax5%3,000 mg200 mg
Marshmallow5%150 mg100 mg
Acacia5%6.5 g1 g

Source: Supplement Facts rows of each product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0.

What kinds of products are they?

Fiber supplements by DSLD product type

Fiber supplements by product typeFiber and Other Nutrients256Other Combinations203Botanical with Nutrients86Botanical59Non-Nutrient/Non-Botanical13Vitamin5Amino acid/Protein4Mineral2
Fiber supplements by product typeFiber and Other Nutrients256Other Combinations203Botanical with Nutrients86Botanical59Non-Nutrient/Non-Botanical13Vitamin5Amino acid/Protein4Mineral2
Fiber supplements by product typeFiber and Other Nutrients256Other Combinations203Botanical with Nutrients86Botanical59Non-Nutrient/Non-Botanical13Vitamin5Amino acid/Protein4Mineral2
Fiber supplements by product typeFiber and Other Nutrients256Other Combinations203Botanical with Nutrients86Botanical59Non-Nutrient/Non-Botanical13Vitamin5Amino acid/Protein4Mineral2
Fiber supplements by product typeFiber and Other Nutrients256Other Combinations203Botanical with Nutrients86Botanical59Non-Nutrient/Non-Botanical13Vitamin5Amino acid/Protein4Mineral2

Brands with the most: Metamucil (27), Nature's Way (22), Renew Life (20), Yerba Prima (18), Enzymatic Therapy (17), NOW (17), Fiber Choice (15), Benefiber (9), vitafusion (8), Organic India (8).

Which products are they?

60 of the 629: on-market products first, the newest label first. Each ingredient page lists every product that contains it.

Source: NIH ODS Dietary Supplement Label Database version 9.4.0. How products are chosen: a fiber row in the Supplement Facts and fiber, fibre or psyllium in the name.

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