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

• Grass Fed Collagen Coconut MCT Mocha FlavorGarden of Life2 g
• Grass Fed Collagen Coconut MCT Vanilla FlavorGarden of Life1 g
• Grass Fed Collagen Creamer ChocolateGarden of Life5 g
• Grass Fed Collagen Creamer Creamy Vanilla FlavorGarden of Life4 g
• Grass Fed Collagen Greens Beauty Apple FlavorGarden of Life1 g
• Grass Fed Collagen Protein ChocolateGarden of Life · off the market1 g
• Grass Fed Collagen Protein Fair Trade ChocolateGarden of Life1 g
• Grass Fed Hormone Free Whey ChocolateDr. Venessa's Formulas0.3 g
• Grass Fed Non-Dairy Collagen CreamerPeak Performance · off the market7 g
• Grass Fed Protein Plus Dutch Chocolate FlavorDr. Sinatra6 g
• Grass Fed Whey Protein Chocolate FlavoredThorne Research · off the market1 g
• Grass Fed Whey Protein Creamy ChocolateNutrology1 g
• Grass Fed Whey Protein Vanilla FlavoredThorne Research · off the marketno amount
• Grass Fed Whey Protein Vanilla Ice CreamNutrology1 g
• Grass-Fed 100% Whey Protein Deluxe VanillaMuscleTechno amount
• Grass-Fed Collagen & Colostrum UnflavoredMK Supplementsno amount
• Grass-Fed Pure Whey Protein Chocolate Milkshake FlavorPrimeGENIXno amount
• Grass-Fed Whey - BananaHarry & David · off the market3 g
• Grass-Fed Whey - ChocolateHarry & David · off the market5 g
• Grass-Fed Whey - StrawberryHarry & David · off the market3 g
• Grass-Fed Whey - VanillaHarry & David Wellness · off the market3 g
• Grass-Fed Whey Protein Banana FlavoredHarry & David · off the market3 g
• Grass-Fed Whey Protein ChocolateEXOS Performance Nutrition · off the market5 g
• Grass-Fed Whey Protein ChocolateSmart Fat · off the market1 g
• Grass-Fed Whey Protein Chocolate FlavoredHarry & David · off the market5 g
• Grass-Fed Whey Protein Concentrate 25 g Milk ChocolateNutricost1 g
• Grass-Fed Whey Protein Concentrate 25 g VanillaNutricostno amount
• Grass-Fed Whey Protein Concentrate Creamy VanillaNOW Sportsno amount
• Grass-Fed Whey Protein Concentrate Dutch ChocolateNOW Sports · off the market1 g
• Grass-Fed Whey Protein Concentrate Natural UnflavoredNOW Sportsno amount
• Grass-Fed Whey Protein Creamy ChocolateNOW Sports1 g
• Grass-Fed Whey Protein Isolate 30 g Milk ChocolateNutricost1 g
• Grass-Fed Whey Protein Isolate 30 g UnflavoredNutricostno amount
• Grass-Fed Whey Protein Isolate 30 g VanillaNutricostno amount
• Grass-Fed Whey Protein Isolate ChocolateOpportuniteas · off the market1 g
• Grass-Fed Whey Protein Powder French Vanilla Wafer SundaeNatreve · off the market5 g
• Grass-Fed Whey Protein Powder Fudge BrownieNatreve · off the market4 g
• Grass-Fed Whey Protein StrawberryAN Amazing Nutrition Amazing Formulasno amount
• Grass-Fed Whey Protein Strawberry FlavoredHarry & David · off the market3 g
• Grass-Fed Whey Protein VanillaEXOS Performance Nutrition · off the market4 g
• Grass-Fed Whey Protein VanillaSmart Fat · off the marketno amount
• Grass-Fed Whey Protein Vanilla FlavoredHarry & David · off the market3 g
• Grass-Fed, Certified rBGH-Free Whey Protein Powder ChocolateSwanson Ultra · off the market0.5 g
• Graviola - Ganabana - SoursopDynamic Health Laboratories Inc.1 g
• Graviola JuiceBIOVEA1 g
• Greater-GreensViva Vitamins1 g
• Greek Yogurtein Coconut CreamJarrow Formulas · off the market8 g
• Greek Yogurtein French VanillaJarrow Formulas · off the market8 g
• Greek Yogurtein PlainJarrow Formulas · off the market8 g
• Green 85Chemical Free Body1 g

Where next?

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