fiber

Fiber supplements

Half of the 6,987 fiber supplements in the NIH label database that print an amount list 2 g or less per serving; the middle half list 1 g to 4 g (DSLD version 9.4.0, January 2026). The 506 products whose only supplement ingredient is fiber list a median of 2 g.

How much fiber do supplements contain?

The median product lists 2 g per serving. One in ten lists 1 g or less, one in ten 6 g or more. The amount printed most often is 1 g (2,773 products).

Which products list the most fiber?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• QCarbo32 Grape FlavorHerbal Clean16 g
• Lean Meal Grass-Fed Whey Protein VanillaAdaptogen Research16 g
• Lean Meal Grass-Fed Whey Protein ChocolateAdaptogen Research16 g
• QCarbo32 Tropical FlavorHerbal Clean16 g
• Complete Whole Food Health Optimizer Natural FlavorSequel Vega15 g
• Complete Whole Food Health Optimizer Berry FlavorSequel Vega15 g
• Complete Whole Food Health Optimizer Vanilla Chai FlavorSequel Vega15 g
• Liquid Fiber Sugar Free OrangeNature's Way15 g

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 2 g; those entered in 2025, 1.2 g.

In which products and brands?

Brands listing it most: Nature's Plus (123), Nature's Way (116), Garden of Life (76), XYMOGEN (76), Natural Factors (74), NOW (67), Metagenics (64), Enzymatic Therapy (61), Source Naturals (60), Amazing Grass (57).

Every product listing fiber

8,718 products, A to Z by name (page 34 of 175), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• COR-Sport Whey Protein ChocolateCellucor · off the market1 g
• Cordyceps Mushroom CapsulesHealth Ranger Select0.1 g
• Cordyceps Power CS-4Planetary Herbals1 g
• Core Cleanser Pineapple Vanilla FlavorSunwarrior Shape5 g
• Core Cleanser Strawberry Cooler FlavorSunwarrior Shape5 g
• Core GreensAdvanced Nutrition by Zahler1 g
• Core Greens Spearmint FlavoredAdvanced Nutrition by Zahler6 g
• Core MRP Banana CreamCore Nutritionals · off the market7.5 g
• Core MRP Peanut Butter Oatmeal CookieCore Nutritionals · off the market5 g
• Core MRP VanillaCore Nutritionals7.5 g
• Core Pro Chocolate DelightCore Nutritionals · off the marketno amount
• Core Pro Cinnamon RollCore Nutritionals · off the marketno amount
• Core Pro Peanut Butter Ice CreamCore Nutritionals · off the marketno amount
• Core Pro Vanilla CreamCore Nutritionals · off the marketno amount
• Core PWO ChocolateCore Nutritionals · off the market0.3 g
• Core Slimming Greens Citrus TwistGNC Earth Genius · off the market3 g
• Core Slimming Greens Mixed BerryGNC Earth Genius · off the market3 g
• Core SupportOrtho Molecular Products5 g
• Core Support ChocolateOrtho Molecular Products8 g
• Core Support French VanillaOrtho Molecular Products8 g
• Corydalis Minor Pain ReliefPlanetary Herbals1 g
• Cosmic CocoaMoon Juice5 g
• Cosmic GoldMoon Juice5 g
• Cosmic MatchaMoon Juice7 g
• CranberryAZO1 g
• Cranberry 1,000 mgLuckyHerbs1 g
• Cranberry Bladder DefensePlanetary Herbals1 g
• Cranberry CapletsAZO1 g
• Cranberry CapsNOW1 g
• Cranberry CapsButterfly Express1 g
• Cranberry ConcentratePhysician's Preference · off the market0.5 g
• Cranberry ConcentrateNOW · off the market0.5 g
• Cranberry ConcentrateNew Sun0.25 g
• Cranberry Extract 475 mgAN Amazing Nutrition Amazing Formulas · off the market1 g
• Cranberry Extract 475 mgHerbal Secrets · off the market1 g
• Cranberry Fruit 475 mgSundown Naturals1 g
• Cranberry Gummies Cranberry FlavorNature's Craft0.05 g
• Cranberry Plus Probiotic21st Century1 g
• Cranberry with PACsNOW1 g
• Cranberry XRU.S. Longevity Institute · off the market1 g
• CranXymTomorrow's Nutrition Pro1 g
• Crash Blue RazzPS ProSupps · off the market1 g
• Crash Blue RazzProSupps1 g
• Crash Fruit PunchPS ProSupps · off the market1 g
• Crash Fruit PunchProSupps1 g
• Crea-Gainz Malibu SunsetMuscleForceno amount
• Creamy Caramel MCT OilNatural Force1 g
• Creamy CoconutSimply Youngno amount
• Creamy Vanilla MCT OilNatural Force1 g
• Creamy Vanilla Protein EnergizerRainbow Light · off the market3 g

Where next?

• Fiber gummies
• Check an amount of fiber
• Labels above the upper limit
• All ingredients