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.
- Products listing it
- 8,7186,987 print an amount; 74 list it inside a blend without an amount
- Median per serving
- 2 gmiddle half 1 g to 4 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).
Products by amount of fiber per serving
6,987 products, log scale; extreme 0.2% at each end left out of the drawing.
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
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.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 130 | 2 g |
| 2012 | 313 | 2 g |
| 2013 | 489 | 2 g |
| 2014 | 496 | 2.5 g |
| 2015 | 476 | 2 g |
| 2016 | 367 | 2 g |
| 2017 | 413 | 1 g |
| 2018 | 396 | 2 g |
| 2019 | 363 | 2 g |
| 2020 | 677 | 2 g |
| 2021 | 535 | 2 g |
| 2022 | 505 | 2 g |
| 2023 | 591 | 1.5 g |
| 2024 | 672 | 1.9 g |
| 2025 | 564 | 1.2 g |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing fiber by DSLD product type
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 90 of 175), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Metamucil Fiber + ProbioticsMetamucil5 g
- Metamucil Fiber Gummies OrangeMetamucil5 g
- Metamucil Free Stone Ground Texture Fiber PowderMetamucil6 g
- Metamucil Premium Blend Orange Sugar-Free with SteviaMetamucil3 g
- Metamyosyn Protein Plus ChocolateMET-Rx · off the market1 g
- MethylMass Cotton CandyEST Engineered Sports Technology · off the marketin a blend
- MethylMass Orange SplashEST Engineered Sports Technology · off the marketin a blend
- MethylMass with Propadrol (6-17 dihydroxyetiocholove-3-ol propionate) Pink LemonadeEST · off the marketno amount
- MethylMass with Propadrol (6-17 dihydroxyetiocholove-3-ol propionate) Tropical FusionEST · off the marketin a blend
- Mg Plus GuardPerque0.0375 g
- Mg/K AspartateMetagenics1 g
- Micellar Casein ChocolateMuscle Feastno amount
- Micellar Casein Chocolate FlavorMuscle Feastno amount
- Micellar Casein Cookies & CreamBodyTechno amount
- Micellar Casein Dutch ChocolateNutraBio · off the market1 g
- Micellar Casein UnflavoredMuscle Feastno amount
- Micellar Casein UnflavoredCalifornia Gold Nutrition SPORTno amount
- Micellar Casein UnflavoredNOW Sportsno amount
- Micellar Casein Vanilla FlavorMuscle Feastno amount
- Micellar Casein Z6 ChocolateMRI Performance · off the market1 g
- Micellar Creme Chocolate MilkshakeSyntraxno amount
- Micellar Creme Strawberry MilkshakeSyntraxno amount
- Micellar Creme Vanilla MilkshakeSyntraxno amount
- Micellar Whey Build Chocolate Fudge Flavorfuel:one · off the market1 g
- Micellar Whey Milk ChocolateMuscleTech Performance Series1 g
- Michelle's Miracle Original FormulaCherry Works1 g
- Micro BioBodyMelt1 g
- Micro Greens Organic BerryEquip2 g
- Microbiome Breakthrough Creamy ChocolateBiOptimizers1 g
- Microbiome Breakthrough Vegetarian VanillaBiOptimizers2 g
- Microbiome FiberDouglas Laboratories5.6 g
- Microbiome FiberCooper Complete6 g
- Microbiome FoodGaia Herbs · off the market3 g
- Micropure Whey Protein Isolate ChocolateKaged Muscle1 g
- Micropure Whey Protein Isolate Cinnamon RollKaged Muscleno amount
- Micropure Whey Protein Isolate Coffee LatteKaged Muscleno amount
- Micropure Whey Protein Isolate VanillaKaged Muscleno amount
- Mightiest Vite Tasty Fruit Punch FlavorLittle DaVinci1 g
- Mighty Beef Bone BrothOm Mushroom Superfoodno amount
- Mighty Chicken Bone BrothOm Mushroom Superfood0.5 g
- Mighty Mushroom BrothOm Mushroom Superfood1 g
- Mighty Veggie Miso BrothOm Mushroom Superfood1 g
- Mighty Vite Tasty Fruit Punch FlavorLittle DaVinci · off the market1 g
- MigraDefenseKAL1 g
- Milk Thistle Extract21st Century1 g
- MilkFlow ChocolateUpSpring1 g
- Millers Bran 500 mgSolgar1 g
- Milletov Pump Berrylicious Bubble GumMillecor2 g
- Mind SpringGaia Herbs · off the market1 g
- Mindful LiftOrganic India1 g