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

• ISO100 Birthday CakeDymatize · off the marketno amount
• ISO100 Birthday Cake Pebbles FlavorDymatize · off the marketno amount
• ISO100 Chocolate Peanut ButterDymatize · off the marketno amount
• ISO100 Hydrolyzed Birthday CakeDymatize · off the marketno amount
• ISO100 Hydrolyzed Birthday Cake PebblesDymatize · off the marketno amount
• ISO100 Hydrolyzed Chocolate CaramelDymatize · off the market1 g
• ISO100 Hydrolyzed Chocolate CoconutDymatize · off the market1 g
• ISO100 Hydrolyzed Chocolate DecadenceDymatize · off the marketno amount
• ISO100 Hydrolyzed Chocolate Peanut ButterDymatizeno amount
• ISO100 Hydrolyzed Chocolate Peanut Butter CupDymatize · off the marketno amount
• ISO100 Hydrolyzed Cinnamon BunDymatize · off the marketno amount
• ISO100 Hydrolyzed Classic VanillaDymatize · off the marketno amount
• ISO100 Hydrolyzed Cocoa PebblesDymatize · off the market1 g
• ISO100 Hydrolyzed Cocoa Pebbles FlavorDymatize1 g
• ISO100 Hydrolyzed Cookies & CreamDymatizeno amount
• ISO100 Hydrolyzed Dunkin' CappuccinoDymatizeno amount
• ISO100 Hydrolyzed Dunkin' Glazed DonutsDymatizeno amount
• ISO100 Hydrolyzed Dunkin' Mocha LatteDymatize1 g
• ISO100 Hydrolyzed Dutch ChocolateDymatize · off the market1 g
• ISO100 Hydrolyzed Fruity PebblesDymatize · off the marketno amount
• ISO100 Hydrolyzed Fruity Pebbles FlavorDymatizeno amount
• ISO100 Hydrolyzed Fudge BrownieDymatize1 g
• ISO100 Hydrolyzed Gourmet ChocolateDymatize1 g
• ISO100 Hydrolyzed Gourmet VanillaDymatizeno amount
• ISO100 Hydrolyzed Natural ChocolateDymatize · off the market1 g
• ISO100 Hydrolyzed Natural VanillaDymatize · off the marketno amount
• ISO100 Hydrolyzed Orange DreamsicleDymatize · off the marketno amount
• ISO100 Hydrolyzed Peanut ButterDymatize · off the marketno amount
• ISO100 Hydrolyzed Pebbles Birthday Cake FlavorDymatizeno amount
• ISO100 Hydrolyzed Rich ChocolateDymatize · off the market1 g
• ISO100 Hydrolyzed Smooth BananaDymatize · off the marketno amount
• ISO100 Hydrolyzed StrawberryDymatizeno amount
• ISO100 Hydrolyzed VanillaDymatize · off the marketno amount
• ISO100 Hydrolyzed Vanilla BlissDymatize · off the marketno amount
• ISO100 Orange DreamsicleDymatize · off the marketno amount
• ISO100 VanillaDymatize · off the marketno amount
• IsoBlast 100% Pure Whey Isolate Protein Chocolate MilkApollon Nutrition3 g
• IsoFast50 Chocolate MilkshakeMHP Maximum Human Performance3 g
• ISOFIT Banana FosterNutrex Research1 g
• ISOFIT Banana FosterNutrex Research UltraFit Series1 g
• ISOFIT Chocolate ShakeNutrex Research1 g
• ISOFIT Peanut Butter ToffeeNutrex Research1 g
• ISOFLEX BananaALLMAXno amount
• ISOFLEX Birthday Cake with SprinklesALLMAXno amount
• ISOFLEX Chiller Citrus Peach SensationALLMAXno amount
• ISOFLEX ChocolateALLMAX ESSENTIALS1 g
• ISOFLEX ChocolateALLMAX1 g
• ISOFLEX Chocolate MintALLMAX1 g
• ISOFLEX Chocolate Peanut ButterALLMAXno amount
• ISOFLEX Cookies & CreamALLMAXno amount

Where next?

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