The Best Fiber Supplements (2021 Reviews)


The benefits of fiber aren’t lost on most people; however, many people don’t realize that most adults in the U.S. don’t get nearly enough of it each day. The average fiber intake in the U.S. is about 15 grams each day, but the currently recommended amount is twice that – 30 grams every day (specific recommendations vary for men and women of different ages). While it’s best if you get most of your daily fiber intake from your diet, supplements can help to reduce the unwanted effects of not consuming enough dietary fiber.

You may be one of the lucky few who experience few (or no) ill effects from a lack of dietary fiber, but most people aren’t so lucky. Even if you don’t notice any negative health effects from a lack of fiber, it can have long-term health consequences. Fiber can help to reduce cholesterol, maintain bowel health, regulate your weight, and even help to control blood sugar levels. In other words, you don’t want to brush off your fiber intake as inconsequential.

For those who struggle to get enough fiber from their daily diets and those who rely on fiber supplements to help regulate conditions such as IBS (Irritable Bowel Syndrome) or chronic constipation, we rounded up 25 of the top-rated fiber supplements to help you make a smart decision for your health. The 25 top-rated fiber supplements listed below (in alphabetical order) include fiber supplements for kids (yes, kids need fiber, too!), powders, capsules, and even brownies that can help you reach your daily fiber goals.

Note that the information below regarding the benefits of each product are based on claims made by the manufacturer. As with any supplement, it’s recommended that you discuss your options with your healthcare provider, and always carefully evaluate nutritional labels before use. The ratings listed below are current as of the time of this writing.

1. Benefiber Taste-Free, Sugar-Free Fiber Supplement Powder for Digestive Health

Current Rating: 4.4

Benefiber Taste-Free, Sugar-Free Fiber Supplement Powder for Digestive Health

Benefiber is one of the best-known fiber supplements, and it’s been around for years. It’s a powder that completely dissolves in a beverage, and it’s taste-free, meaning you can add it to just about any beverage you prefer. It contains wheat dextrin, a natural prebiotic fiber that supports a healthy balance microflora and overall digestive health.

Key Features:

  • Gluten-free
  • Non-thickening
  • Available in multiple sizes
  • Dissolves completely in liquid
  • 3 grams of fiber per serving
  • Serving size: 2 tsp

2. Citrucel Caplets Fiber Therapy

Current Rating: 4.4

Citrucel Caplets Fiber Therapy

Citrucel is another brand with staying power, having been well-known for many years as a leading fiber supplement. It’s not known to cause excess gas like some fiber supplements can.

Key Features:

  • Clinically proven to relieve occasional constipation
  • Contains methylcellulose fiber, which is non-irritating and non-allergenic
  • Easy to swallow caplets

3. Fiber Choice Nutritional Prebiotic Supplement Sugar-Free Assorted Fruit Tablet

Current Rating: 4.2

Fiber Choice Nutritional Prebiotic Supplement Sugar-Free Assorted Fruit Tablet

Fiber Choice Nutritional Prebiotic Supplements are chewable tablets in assorted fruit flavors. They’re made of inulin, which is a natural fiber found in fruits and vegetables, and it stimulates the growth of healthy bacteria in the digestive system.

Key Features:

  • Chewable tablets
  • Sugar-free
  • Made from natural fiber
  • Inulin helps to boost calcium absorption
  • 2 tablets per serving
  • 3 grams of fiber per serving

4. Fiber One Brownies

Current Rating: 4.4

Fiber One Brownies

These 90-calorie chocolate fudge brownies taste great and provide a valuable source of fiber. And who doesn’t want to get their daily fiber from a delicious brownie? If brownies aren’t your think, you can get your daily fiber from other Fiber One products, such as their delectable chocolate caramel bars or chocolate chip cookie bars.

Key Features:

  • Individually-wrapped snack bars
  • 90 calories per bar
  • 5 grams of dietary fiber per serving (1 brownie)
  • Other fiber supplement snacks available

5. FiberAdvance Gummies

Current Rating: 4.5

FiberAdvance Gummies

FiberAdvance Gummies are another product that aims to make it easy to meet your recommended daily fiber intake, in the form of tasty gummies. A serving of two gummies provides 4 grams of fiber.

Key Features:

  • Assorted fruit flavors
  • All-natural ingredients
  • Chew 2 gummies for 4 grams of fiber

6. FiberCon Fiber Therapy for Regularity

Current Rating: 4.4

FiberCon Fiber Therapy for Regularity

FiberCon is another recognizable brand. These caplets contain Calcium Polycarbophil, which is gentle enough for everyday use. It’s also stimulant-free and contains 244 mg of Calcium per dose as well.

Key Features:

  • Stimulant-free
  • 244 mg of Calcium per dose
  • 625 mg calcium polycarbophil
  • 2 caplets is equivalent to one dose of FiberCon powder

7. Garden of Life Raw Organic Superfood Fiber

Current Rating: 4.1

Garden of Life Raw Organic Superfood Fiber

This vegan fiber supplement contains 9 grams of fiber per serving and also contains 7 grams of protein, probiotics, and omega 3 fatty acids, making it an excellent choice for supporting overall health.

Key Features:

  • Powder formulation
  • Raw fiber made from 15 organic superfoods
  • Supports gut health, regular bowel function, and cardiovascular function
  • Supports the healthy elimination of toxins
  • Aids in regulating blood sugar
  • Gluten-free, dairy-free, and psyllium-free
  • 9 grams of fiber per serving (1 scoop, approximately 27 grams)

8. Heather’s Tummy Fiber POUCH Organic Acacia Senegal

Current Rating: 4.3

Heather's Tummy Fiber POUCH Organic Acacia Senegal

Heather’s Tummy Fiber POUCH Organic Acacia Senegal isn’t a widely known fiber supplement, but according to reviewers, it’s a highly effective aid for managing the symptoms of conditions such as Irritable Bowel Syndrome (IBS) and the abdominal pain, constipation, and diarrhea that may accompany IBS flare-ups.

Key Features:

  • Helps to regulate bowel motility
  • Pure, organic soluble fiber has a prebiotic effect
  • Increases good gut flora
  • Contains no psyllium, citric acid, insoluble fiber, FODMAPS, or artificial sweeteners
  • Decreases gas and bloating
  • Powder formulation dissolves in liquids or moist foods
  • 2 grams of fiber per 1 2.5-gram serving (about one level teaspoon)

9. Kirkland Signature OPTIFIBER

Current Rating: 4.3

Kirkland Signature OPTIFIBER

Kirkland Signature’s OPTIFIBER is a powder-based formulation that’s flavor-free, sugar-free, and lactose-free, making it ideal for those with lactose sensitivity or intolerance. Kirkland Signature fiber supplements are also available in a capsule formulation for about $16 for 320 capsules. The capsules are a slightly different formulation containing psyllium husks.

Key Features:

  • Dissolves completely in water
  • Non-thickening and non-gritty
  • No artificial coloring
  • All-natural ingredients
  • 3 grams of fiber per 1 2-tsp scoop (1 serving)

10. Manitoba Harvest Organic Hemp Pro Fiber Protein Supplement

Current Rating: 3.9

Manitoba Harvest Organic Hemp Pro Fiber Protein Supplement

Manitoba Harvest Organic Hemp Pro Fiber Protein Supplements contain a multitude of valuable ingredients, including 11 grams of protein per serving, plus omega-3, omega-6, and omega-9 fatty acids. They’re made of hemp hearts, which have a slightly nutty taste – similar to sunflower seeds or pine nuts, and they contain a whopping 13 grams of dietary fiber per 4-tablespoon serving.

Key Features:

  • Powder formulation can be sprinkled on salads, oatmeal, yogurt, and more
  • Can be used as an ingredient in smoothies and other recipes
  • Contains more protein and less carbs than chia or flax
  • Great combination of fiber, protein, and omega-3s

11. Metamucil Daily Fiber Supplement

Current Rating: 4.1

Metamucil Daily Fiber Supplement

Everyone’s heard of Metamucil. This fiber supplement has been around for years and is often recommended by doctors. It contains 100% natural psyllium fiber and is a powder formulation that’s easy to mix with water or other beverages.

Key Features:

  • Helps you to feel full between meals
  • Helps to maintain healthy blood sugar levels
  • Helps to lower cholesterol
  • Promotes digestive health
  • Contains 6 grams of fiber per serving (2 rounded teaspoons, about 22 grams)

12. NOW Psyllium Husk Capsules

Current Rating: 4.3

NOW Psyllium Husk Capsules

These psyllium husk capsules get rave reviews from users, and the manufacturer has recently changed the product formulation, so they’re now vegetarian capsules. These supplements support healthy digestion and help to regulate gastrointestinal health.

Key Features:

  • Capsules are convenient to take on the go
  • Contain natural soluble fiber
  • Now vegetarian capsules
  • Take 3 capsules twice daily with a glass of water

13. NutriONN Psyllium Husk Capsules

Current Rating: 4.5

NutriONN Psyllium Husk Capsules

NutriONN’s Psyllium Husk Capsules contain 100% natural, premium psyllium husk fiber that promotes healthy digestion, promotes weight management, and alleviates constipation.

Key Features:

  • Naturally gluten-free
  • Contains 50% more psyllium than other leading brands
  • 1450 mg psyllium husk per serving (2 capsules)
  • 100% money-back guarantee

14. NutriSource Fiber Dietary Fiber Nutritional Supplements

Current Rating: 4.5

NutriSource Fiber Dietary Fiber Nutritional Supplements

NutriSource Daily Fiber Nutritional Supplements provide 3 grams of soluble fiber per serving, made from 100% partially hydrolyzed guar gum (PHGG). A powder formulation, there are about 15 calories per serving. This supplement is made by Nestlé Health Science.

Key Features:

  • Kosher
  • Suitable for gluten-free diets
  • Appropriate for lactose-free diets
  • 3 grams of fiber per serving (1 scoop, about 1 tablespoon)

15. BeLive Prebiotic Fiber Gummies for Kids & Adults

Current Rating: 4.2

BeLive Prebiotic Fiber Gummies Supplement

BeLive Prebiotic Fiber Gummies offer a great-tasting source of fiber, with an apple flavor. The fiber in these supplements comes from Chicory Root, a prebiotic that helps to support gut health and regularity.

Key Features:

  • All-natural ingredients derived from fruits, vegetables, and herbs
  • Formulated with no wheat or wheat-derivatives
  • 1.6 grams of dietary fiber per serving

16. Optimum Nutrition Fitness Fiber

Current Rating: 4.1

Optimum Nutrition Fitness Fiber

Fiber is great for weight management, as it helps you to feel full between meals, which can make you less likely to reach for unhealthy snacks throughout the day. Optimum Nutrition Fitness Fiber is a supplement specifically targeted to those who are trying to get fit and maintain a healthy weight, containing a blend of six different fiber sources for maximum effectiveness.

Key Features:

  • 5 grams of dietary fiber per serving
  • 10 calories per serving
  • Add a teaspoon to your favorite drink, oatmeal, protein shake, or other foods
  • Contains a blend of: Polydextrose, Maltodextrin, Inulin, Partially Hydrolyzed Guar Gum, Psyllium Seed Husk, Gum Arabic
  • Unflavored

17. Phillips’ Fiber Good Gummies

Current Rating: 4.5

Phillips' Fiber Good Gummies

Phillips’ Fiber Good Gummies are a convenient source of dietary fiber to help promote regularity and overall digestive health. With 4 grams of fiber per serving (2 gummies), you’ll get 8 additional grams of fiber every day.

Key Features:

  • Great-tasting natural fruit flavors
  • Take 2 gummies twice daily
  • 4 grams of fiber per serving (2 gummies)
  • Contains inulin soluble fiber

18. Reset360 Daily Fiber

Current Rating: 4.3

Reset360 Daily Fiber

Created by Dr. Sara Gottfried, author of The Hormone Reset Diet, Reset360 Daily Fiber supplements contain 0 carbs, 8 grams of fiber, and 500 mg of an Omega fatty acid blend that supports digestive and cardiovascular health, as well as overall well-being.

Key Features:

  • Can be taken to support weight management
  • Powder formulation with no taste and no grit
  • Supports healthy cholesterol, blood sugar, and hormone levels
  • 8 grams of fiber per 1-scoop serving

19. SmartyPants Kids Complete Fiber Multivitamin

Current Rating: 4.0

SmartyPants Kids Complete Fiber Multivitamin

If your kids aren’t getting enough fiber, consider a multivitamin that packs 4 grams of dietary fiber per serving plus other vitamins and minerals they need to promote good health. The SmartyPants Kids Complete Fiber Multivitamin contains 14 essential nutrients, a daily dose of fiber, plus omega-3 fatty acids for brain health in a great-tasting gummy your kids will love.

Key Features:

  • Gluten-free and allergen-free
  • Non-GMO
  • No synthetic colors, artificial flavors, sweeteners, or preservatives
  • Focuses on providing the nutrients that many kids lack

20. Source Organic Fiber

Current Rating: 4.2

 Source Organic Fiber

Source Organic Fiber is 100% non-GMO, organic fiber supplement, containing both soluble and insoluble fiber. This prebiotic supports healthy digestion and is a powder formulation easily served by mixing a serving with 8 to 16 ounces of water twice daily.

Key Features:

  • 6 grams of dietary fiber per serving (4 mg soluble fiber)
  • 2 scoops per serving, about 1 tablespoon
  • Contains Organic Agave Inulin, Organic Oat Fiber, and Organic Psyllium Husk

21. Sunergetic Psyllium Husk Capsules

Current Rating: 4.5

Sunergetic Psyllium Husk Capsules

Sunergetic Psyllium Husk Capsules support healthy digestion and weight loss and also alleviates constipation. It contains psyllium husk, a natural source of soluble fiber found in many popular fiber supplements, in a capsule formulation.

Key Features:

  • 365-day, money-back guarantee
  • Made in the USA in an FDA-registered facility
  • Adheres to Good Manufacturing Processes (GMP)
  • Take 1-3 capsules twice daily with a glass of water

22. Vitafusion Fiber Well Fit Gummies

Current Rating: 4.3

Vitafusion Fiber Well Fit Gummies

These fiber supplement gummies taste great and provide 5 grams of fiber per serving to promote digestive health and regularity, as well as 6 high-potency B Vitamins to support fat, carb, and protein metabolism for healthy weight management.

Key Features:

  • Prebiotic benefits
  • Sugar-free
  • Natural peach, strawberry, and berry flavors
  • 5 grams of fiber per serving (2 gummies)
  • Just 10 calories per serving

23. Natural Nutra Super Fiber Supplement

Current Rating: 3.5

Natural Nutra Super Fiber Supplement

Natural Nutra Super Fiber Supplement contains a blend of Psyllium Husk, Guar Gum, and Oat Fiber. This supplement help support healthy digestion, colon health and regularity. It also help boost heart health and helps make it easy to maintain you ideal weight.

Key Features:

  • 2 grams of dietary fiber per serving
  • Vegan tablets
  • 3 tablets per serving
  • 100% natural and gluten-free

24. Viva Naturals Organic Psyllium Husk

Current Rating: 4.3

Viva Naturals Organic Psyllium Husk

These vegetarian psyllium capsules are organic and contain 1 gram of dietary fiber per serving, both soluble and insoluble fiber. The total recommended daily dose provides 8% of the daily recommended fiber intake (2.2 grams).

Key Features:

  • Capsules expand to 10-20 times their original size in liquids
  • Sweeps cholesterol from the digestive tract for cardiovascular support
  • Made in GMP-certified facilities in the USA
  • 3 capsules per serving
  • 1 gram of dietary fiber per serving

25. Yummi Bears Fiber Supplement for Kids

Current Rating: 4.1

Yummi Bears Fiber Supplement for Kids

Yummi Bears Fiber Supplement for Kids provide the fiber your kids need for digestive health, regularity, and blood sugar health in a great-tasting gummy in delicious flavors such as strawberry, orange, grape, and pineapple.

Key Features:

  • Natural prebiotic
  • Gluten-free, allergen-free, and dairy-free
  • 4 gummy bears per serving
  • 4 grams of fiber per serving


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