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 74 of 175), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• IsoNatural Whey Protein Isolate VanillaALLMAX NUTRITION · off the market0.75 g
• IsoNatural Whey Protein Isolate VanillaALLMAX · off the marketno amount
• ISOPlant ChocolateALLMAX Naturals1 g
• ISOPlant VanillaALLMAX Naturalsno amount
• Isopoure Low Carb Dutch ChocolateThe Isopure Company1 g
• Isopure Black & Green Tea PeachNature's Best · off the marketno amount
• Isopure Low Carb Creamy VanillaNature's Best · off the marketno amount
• Isopure Low Carb Dutch ChocolateThe Isopure Company1 g
• Isopure Low Carb Dutch ChocolateNature's Best · off the market1 g
• Isopure Low Carb Strawberries & CreamNature's Best · off the marketno amount
• Isopure Low Carb Toasted CoconutNature's Best · off the marketno amount
• Isopure Mass Creamy VanillaNature's Best · off the market4 g
• Isopure Mass Dutch ChocolateNature's Best · off the marketin a blend
• Isopure Original Chocolate Peanut ButterNature's Best · off the marketno amount
• Isopure Original Creamy VanillaNature's Best · off the marketno amount
• Isopure Original Dutch ChocolateNature's Best · off the marketno amount
• Isopure Original Orange CreamNature's Best · off the marketno amount
• Isopure Original Strawberries & CreamNature's Best · off the marketno amount
• ISOPURE Protein Powder Espresso with CoffeeNature's Best · off the marketno amount
• Isopure Whey Protein Isolate Natural Chocolate FlavorThe Isopure Company1 g
• Isopure Whey Protein Isolate UnflavoredNature's Best · off the marketno amount
• Isopure With Coffee Colombian CoffeeNature's Best · off the marketno amount
• Isopure With Coffee EspressoNature's Best · off the marketno amount
• Isopure Zero Carb Alpine PunchNature's Best · off the marketno amount
• Isopure Zero Carb Banana CreamNature's Best · off the marketno amount
• Isopure Zero Carb Cookies & CreamNature's Best · off the marketno amount
• Isopure Zero Carb Creamy VanillaNature's Best · off the marketno amount
• Isopure Zero Carb Mango PeachNature's Best · off the marketno amount
• Isopure Zero Carb Mint Chocolate ChipNature's Best · off the marketno amount
• Isopure Zero Carb Pineapple Orange BananaNature's Best · off the marketno amount
• Isopure Zero Carb Strawberries & CreamNature's Best · off the marketno amount
• IsotopeRedcon11 g
• It's Vital Cor NutritionIt Works!in a blend
• Japanese Green TeaIndiana Botanic Gardens0.5 g
• Japanese Green TeaBotanic Choice1 g
• Java Whey Original BlendNutraBiono amount
• Javapro CaramelNature's Best · off the marketno amount
• Javapro CoffeeNature's Best · off the marketno amount
• Javapro EspressoNature's Best · off the marketno amount
• Javapro French VanillaNature's Best · off the marketno amount
• Javapro HazelnutNature's Best · off the marketno amount
• Javapro LatteNature's Best · off the marketno amount
• Javapro MochaNature's Best · off the marketno amount
• Jocko Greens Pineapple/CoconutJocko Fuel1 g
• Jocko Molk Chocolate Peanut Butter ProteinJocko Fuel1 g
• Jocko Molk Mint ChocolateJocko Fuelno amount
• Jocko Molk Mint Chocolate ProteinJocko Fuel1 g
• Jocko Molk The Darkness Chocolate ProteinJocko Fuel1 g
• Jocko Molk UnflavoredJocko Fuelno amount
• Jocko Protein Powder Molk Cookies & CreamJocko Fuel1 g

Where next?

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