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 70 of 175), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- intraKID All Natural Raspberry FlavorDrucker Labs · off the market4 g
- intraKID All-In-One All Natural Fresh Raspberry TasteDrucker Labs · off the market0.004 g as transcribed, likely a slip
- intraMAX 2.0 Peach Mango FlavorDrucker Labs1 g
- IntraMax All-In-One All Natural Peach Mango FlavorDrucker Labs · off the market8 g
- intraMIN Organic Trace Minerals All Natural Tropical Fruit FlavorDrucker Labs · off the marketno amount
- intraMIN Organic Trace Minerals Naturally UnflavoredDrucker Labs · off the marketno amount
- IntraPro Chocolate MilkGaspari Nutrition1 g
- IntraPro Delicious Vanilla FlavorGaspari Nutrition3 g
- IntraPro Double Chocolate FlavorGaspari Nutrition3 g
- IntraPro Strawberries & Cream FlavorGaspari Nutrition1 g
- IntraPro Strawberry MilkshakeGaspari Nutrition1 g
- IntraPro Vanilla MilkshakeGaspari Nutrition1 g
- InulinSwanson5 g
- InulinBulkSupplements.com2 g
- Inulin FOSJarrow Formulas · off the market3 g
- Inulin Prebiotic FiberDr. Clark Store1.8 g
- InvisifiberNutrilite4 g
- ioWhey Protein Post Workout Chocolate BrowniePerformix1 g
- ioWhey Protein Post Workout Fruity CerealPerformixno amount
- IPP Non-GMO Soy Lecithin GranulesVSN Vital Strength Nutrition · off the marketno amount
- IPP Non-GMO Soy Lecithin GranulesVitaCeutical Labsno amount
- IPP Non-GMO Soy Lecithin GranulesVitamer Laboratoriesno amount
- Ipriflavone 200 mgSolgar1 g
- Ipriflavone PlusKaruna1 g
- Irish Moss PowderBIOVEA Natural Foodsno amount
- Iron BuilderSNAP0.1 g
- Iron Free Green SourceGood 'N Natural · off the market1 g
- Iron Veggie FormulaHerbal Hills0.263 g
- Iron Vitamins & MineralsGN+Vida · off the marketno amount
- Iron-Licious Gummies Natural Cherry FlavorMaxiYum2 g
- ISO CappuccinoCore Nutritionalsno amount
- ISO Chocolate DecadenceCore Nutritionalsno amount
- ISO Chocolate Mint CookieCore Nutritionals1 g
- ISO Chocolate Peanut Butter CupCore Nutritionalsno amount
- ISO Chocolate Peppermint BarkCore Nutritionalsno amount
- ISO Cool Cherry BerryUltimate Nutrition Platinum Series · off the marketno amount
- ISO Cool Chocolate CremeUltimate Nutrition Platinum Series · off the marketno amount
- ISO Cool Juicy AppleUltimate Nutrition Platinum Series · off the marketno amount
- ISO Cool Peachy PeachUltimate Nutrition Platinum Series · off the marketno amount
- ISO Cool Vanilla CremeUltimate Nutrition Platinum Series · off the marketno amount
- Iso Force Chocolate Covered StrawberryMuscleForce1 g
- Iso Force Chocolate MilkshakeMuscleForce2 g
- Iso Force Chocolate MintMuscleForce1 g
- Iso Force Fruity RubblesMuscleForce1 g
- Iso Force Limited Edition Blueberry Lemon CheesecakeMuscleForce1 g
- Iso Force Peanut Butter Cookies & CreamMuscleForce1 g
- Iso Force Vanilla Ice CreamMuscleForce1 g
- Iso Force White Chocolate Peanut ButterMuscleForce1 g
- ISO Frosted Cinnamon BunCore Nutritionalsno amount
- Iso HD Chocolate BrownieBPI Sportsno amount