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

• Whey Protein UnflavoredLake Avenue Nutritionno amount
• Whey Protein UnflavoredBulkSupplements.com · off the marketno amount
• Whey Protein VanillaJay Robbno amount
• Whey Protein VanillaNOW Sports3 g
• Whey Protein VanillaOx Nutrition · off the market3 g
• Whey Protein VanillaOrganic Food Barno amount
• Whey Protein VanillaAll Natural Assets · off the marketno amount
• Whey Protein VanillaLife Time Fitness · off the marketno amount
• Whey Protein VanillaCenegenics · off the market1 g
• Whey Protein Vanilla21st Century ReNourish Sport3 g
• Whey Protein VanillaNewtonEverettno amount
• Whey Protein VanillaRanger Nutrition · off the marketno amount
• Whey Protein Vanillac/o1 g
• Whey Protein VanillaMRM Nutrition1 g
• Whey Protein VanillaPerformixno amount
• Whey Protein Vanilla Bean21st Century ReNourish2 g
• Whey Protein Vanilla Cake Batterproject#1no amount
• Whey Protein Vanilla FlavoredLadder2 g
• Whey Protein Vanilla FlavoredMRM Nutrition2 g
• Whey Protein Vanilla Peanut ButterHTLT1 g
• Whey Satisfied Natural Vanilla Spice FlavorDouglas Laboratories2 g
• Whey Shake Chocolate ShakeSyntrax1 g
• Whey Shake Cookies & CreamSyntrax1 g
• Whey Shake Strawberry ShakeSyntraxno amount
• Whey Shake Vanilla ShakeSyntraxno amount
• Whey Tech Pro 24 Chocolate CoconutBodyTech1 g
• Whey Tech Pro 24 MochaBodyTech1 g
• Whey To Go Chocolate FlavorSolgar1 g
• Whey To Go Natural Chocolate FlavorSolgar · off the market1 g
• Whey To Go Protein Powder ChocolateSolgar · off the market1 g
• Whey To Go Protein Powder UnflavoredSolgarno amount
• Whey To Go Protein Powder Vanilla FlavorSolgarno amount
• Whey To Go Whey Protein Powder ChocolateSolgar1 g
• Whey Ultra Clean 100 Chocolate CupcakeRoyal Sport · off the market1 g
• Whey Ultra Clean 100 Chocolate Cupcake FlavorRoyal Sport · off the market1 g
• Whey Ultra Clean 100 Cinnamon BunRoyal Sport · off the marketno amount
• Whey Ultra Clean 100 Cinnamon Bun FlavorRoyal Sport · off the marketno amount
• Whey Ultra Clean 100 Ice Cream SandwichRoyal Sport · off the marketno amount
• Whey Ultra Clean 100 Ice Cream Sandwich FlavorRoyal Sport · off the marketno amount
• Whey Ultra Clean 100 Mint ChocolateRoyal Sport · off the marketno amount
• Whey Ultra Clean 100 Peanut Butter ChocolateRoyal Sport · off the market1 g
• Whey Ultra Clean 100 Vanilla CreamRoyal Sport · off the marketno amount
• Whey Ultra Clean 100 Vanilla Cream FlavorRoyal Sport · off the marketno amount
• Whey+ Chocolate Peanut ButterEC Sports1.4 g
• Wheybolic 40 ChocolateGNC Amplified1 g
• Wheybolic 40 VanillaGNC Amplified1 g
• Wheybolic 40 VanillaGNC AMP Advanced Muscle Performance1 g
• Wheybolic Alpha Chocolate FudgeGNC AMP2 g
• Wheybolic Alpha Chocolate FudgeGNC AMP Advanced Muscle Performance1 g
• Wheybolic Chocolate FudgeGNC AMP Advanced Muscle Performance1 g

Where next?

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