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

• MultiVites Plus Digestive Support Sugar Freevitafusion3 g
• Muscle & Weight Gainer ChocolatePrecision Engineered4 g
• Muscle & Weight Gainer VanillaPrecision Engineered2 g
• Muscle + Joint FormulaCherry Works1 g
• Muscle Builder ChocolatePower Blendz1 g
• Muscle Builder VanillaPower Blendz · off the marketno amount
• Muscle Building Milk Shake Elite Series Decadent ChocolateSix Star Pro Nutrition2 g
• Muscle Delight Chocolate CakeAxis Labs1 g
• Muscle Delight French ToastAxis Labs1 g
• Muscle Delight S'moresAxis Labs1 g
• Muscle Delight Vanilla Ice CreamAxis Labs1 g
• Muscle DynamicsHighland Laboratories0.1 g
• Muscle Fiber Unflavored PowderFINAFLEX3 g
• Muscle Infusion Black Chocolate MonsterNutrex Research1.5 g
• Muscle Infusion Black Cookie MadnessNutrex Research1 g
• Muscle Infusion Black Vanilla BeastNutrex Research · off the market1 g
• Muscle Infusion Black Vanilla VillainNutrex Research1 g
• Muscle Infusion ChocolateNutrex Research1.5 g
• Muscle Infusion ChocolateNutrex Research Black Series1 g
• Muscle Infusion Chocolate Banana CrunchNutrex Research1 g
• Muscle Infusion Chocolate Banana CrunchNutrex Research Black Series1 g
• Muscle Infusion Chocolate Peanut Butter CrunchNutrex Research1 g
• Muscle Infusion Chocolate Peanut Butter CrunchNutrex Research Black Series1 g
• Muscle Infusion VanillaNutrex Research1 g
• Muscle Infusion VanillaNutrex Research Black Series1 g
• Muscle Maker Chocolate ShakeGiant Sports8 g
• Muscle Maker Vanilla ShakeGiant Sports7.5 g
• Muscle Mass Gainer ChocolateLabrada8 g
• Muscle Matrix MRP Banana CreamNutraBio4 g
• Muscle Matrix MRP Chocolate MilkshakeNutraBio · off the market5 g
• Muscle Matrix MRP Creamy VanillaNutraBio · off the market5 g
• Muscle Matrix MRP Strawberry SmoothieNutraBio4 g
• Muscle Matrix MRP Women's Formula Banana CreamNutraBio4 g
• Muscle Matrix MRP Women's Formula Chocolate MilkshakeNutraBio4 g
• Muscle Matrix MRP Women's Formula Creamy VanillaNutraBio4 g
• Muscle Matrix MRP Women's Formula Strawberry SmoothieNutraBio4 g
• Muscle Matrix Protein Women's Formula Dutch ChocolateNutraBio1 g
• Muscle Milk Banana Creme ShakeChampBev1 g
• Muscle Milk Brownie BatterCytoSport10 g
• Muscle Milk ChocolateCytoSport10 g
• Muscle Milk Chocolate Milk ShakeChampBev2 g
• Muscle Milk Collegiate Chocolate Milk ShakeCytoSport2 g
• Muscle Milk Collegiate Vanilla Creme ShakeCytoSport1 g
• Muscle Milk Genuine ChocolateMuscle Milk5 g
• Muscle Milk Genuine Vanilla CremeMuscle Milk5 g
• Muscle Milk Light Banana CremeCytoSport1 g
• Muscle Milk Light Cake BatterCytoSport1 g
• Muscle Milk Light Chocolate MilkCytoSport1 g
• Muscle Milk Light Peanut Butter ChocolateCytoSport1 g
• Muscle Milk Light Vanilla CremeCytoSport1 g

Where next?

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