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

• Mass JYM Chocolate MousseJYM Supplement Science · off the market4 g
• Mass JYM Chocolate MousseJYM5 g
• Mass JYM S'moresJYM9 g
• Mass JYM Tahitian Vanilla BeanJYM Supplement Science3 g
• Mass JYM VanillaJYM8 g
• Mass Maker Ultra Delicious ChocolateBeverly International3 g
• Mass Maker Ultra Delicious VanillaBeverly International3 g
• Mass Pro ChocolateG6 Sportsno amount
• Mass Pro High Protein Mass Gainer ChocolateG6 Sportsno amount
• Mass Pro High Protein Mass Gainer VanillaG6 Sportsno amount
• Mass Pro VanillaG6 Sportsno amount
• Mass Tech Extreme 2000 Triple Chocolate BrownieMuscleTech Performance Series1 g
• MASS TECH Milk ChocolateMuscleTech Performance Series6 g
• Mass Triple ChocolateMutantin a blend
• Mass Vanilla Ice CreamMutantin a blend
• Mass XXplosion Anabolic Workout Formula GrapeNutrex Researchno amount
• Mass XXplosion Fruit PunchNutrex Researchno amount
• Mass XXX ChocolateGNC Pro Performance4 g
• Mass XXX ChocolateGNC AMP4 g
• Mass XXX ChocolateGNC AMP Advanced Muscle Performance6 g
• Mass XXX Chocolate Raspberry TruffleGNC AMP Advanced Muscle Performance4 g
• Mass XXX VanillaGNC Pro Performanceno amount
• Mass-Peak ChocolateInner Armourno amount
• Mass-Peak Chocolate Peanut ButterInner Armour4 g
• Mass-Peak Cookies And CreamInner Armour2 g
• Mass-Peak StrawberryInner Armourno amount
• Mass-Peak VanillaInner Armourno amount
• Mass-Tadon ChocolateInterActive Nutrition · off the market7 g
• Mass-Tadon StrawberryInterActive Nutrition · off the market5 g
• Mass-Tadon VanillaInterActive Nutrition · off the market5 g
• Mass-TechMuscleTech2.5 g
• Mass-Tech Strawberry MilkshakeMuscleTech1 g
• Massive Muscle Gainer ChocolateMRM5 g
• MassportInfinite labsno amount
• Master Blend Plant-Based Protein Powder Creamy ChocolateOm Mushroom Superfood4 g
• Master Blend Plant-Based Protein Powder Creamy VanillaOm Mushroom Superfood3 g
• Master CleanseEclectic Herb · off the market1 g
• Master Cleanse Lemonade DietpHion Balance0.5 g
• Master Cleanse PowderEclectic Herb1 g
• Mastic Gum 1000 mgSolaray1 g
• Mastic Gum Extract 1000 mgSolaray1 g
• Mastic Gum/DGLKlaire Labs1 g
• MatchaGreen Foods1 g
• Matcha & Protein Matcha Green TeaAbout Timeno amount
• Matcha & Vegan Protein Matcha Green TeaAbout Timeno amount
• Matrix 1.0 Milk ChocolateSyntrax1 g
• Matrix 1.0 Simply VanillaSyntraxno amount
• Matrix 2.0 Bananas & CreamSyntraxno amount
• Matrix 2.0 Cookies & CreamSyntraxno amount
• Matrix 2.0 Milk ChocolateSyntrax1 g

Where next?

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