18 Best Fiber Supplements for IBS Diarrhea Relief

Discover the best fiber supplement for IBS diarrhea that soothes your gut, promotes regularity, and keeps you feeling balanced and vibrant daily.
BrandMy RatingPrice
Now Foods
Best Cheap Pick
9.2/10
Zenwise Health
Best for Fast Relief
8.8/10
Docdigest by Design
Best for Probiotic Support
7.8/10
Now Foods
Best Cheap Pick
9.2/10
Benefiber
9.4/10

Best Fiber Supplement for Ibs Diarrhea

Struggling with IBS-related diarrhea can feel like an endless race against discomfort, but the right fiber supplement might be your beacon of relief. In this quick guide, we’ll uncover the best fiber options to help tame those unpredictable symptoms and restore balance to your gut. Get ready to discover the gentle yet effective solutions that can make a real difference.

Best Cheap Pick: NOW Psyllium Husk Caps

NOW Foods Supplements, Psyllium Husk Caps 500 mg, Non-GMO Project Verified, Natural Soluble Fiber, Intestinal Health*, 200 Veg Capsules
Highlights
Supports intestinal health
Convenient capsule form
Non-GMO and vegan

As our "Best Cheap Pick," this psyllium husk capsules offer natural soluble fiber that’s easy to incorporate into daily routines.

The bulking action of psyllium can help maintain regularity and promote digestive health, especially for those with IBS-related diarrhea.

Plus, it’s non-GMO, vegan, and certified kosher, matching quality with affordability.

While you might need to take multiple capsules per day, the high purchase volume and stellar reviews make it a cost-effective choice to keep your GI system happy.

Just be mindful not to exceed the recommended dose!

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Price history for NOW Psyllium Husk Caps on Amazon

Best for Fast Relief: Zenwise Digestive Enzymes

Zenwise Health Digestive Enzymes for Gut Health - Probiotic Multi Enzymes with Prebiotics and Probiotics for Women and Men for Digestive Health and Bloating Relief, Daily Enzymes for Digestion -180 CT
Highlights
Fast-acting relief
Clinically proven probiotics
Plant-based enzymes

As the best for fast relief, it packs a punch with its powerful enzyme blend that kicks in immediately, breaking down food up to 39% more efficiently.

The clinically proven probiotics arrive alive and start working within hours, maintaining your digestive flora and helping regulate bowel movements.

Plus, its plant-based formula nourishes your microbiome, supporting digestion and immune health simultaneously.

Just one capsule before your meal can provide quick, natural soothing for bloating, gas, and discomfort.

Perfect for those urgent moments when relief can’t wait!

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Price history for Zenwise Digestive Enzymes on Amazon

Best for Probiotic Support: DocDigest Antidiarrheal

IBS Anti Diarrhea Probiotic for Diarrhea Relief and IBS-D - Clinically Studied Antidiarrheal Pills for Long-Term Comfort - Diarrhea Medication for Adults - Specialized IBS Supplement and Medicine
Highlights
Clinically proven relief
Supports mental well-being
Easy to take

As the best for probiotic support, it specifically targets IBS-D symptoms with a clinically studied probiotic blend.

Many users report improved stool consistency and fewer urgent bathroom visits after consistent use, which is a game-changer for daily routines.

Plus, its ability to support gut health may also boost emotional well-being, a valuable bonus for those dealing with the mental toll of IBS.

The once-daily capsule makes it easy to incorporate into any schedule, though results may take a few weeks to fully kick in.

Overall, a solid choice for targeted, science-backed relief.

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Price history for DocDigest Antidiarrheal on Amazon

Benefiber

Benefiber On the Go Prebiotic Fiber Supplement Powder for Digestive Health, Daily Fiber, Unflavored - 28 Sticks (3.92 Ounces)
Highlights
Tasteless and odorless
Convenient individual sticks
Effective for IBS relief

Benefiber On the Go stands out because it’s tasteless and odorless, making it easy to add to any drink or soft food without altering the flavor.

Its convenience in individual sticks is a real game-changer for on-the-fly relief.

The prebiotic fiber, made from wheat dextrin, effectively nourishes good gut bacteria and supports digestive health—particularly helpful for IBS diarrhea.

While it’s a bit pricier and requires proper dosing, its efficacy and discreet form make it a solid choice for quick, daily relief. Plus, its popularity speaks for itself with high ratings and a trusted brand behind it.

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Price history for Benefiber on Amazon

Florasophy

Firm Up Organic Soluble Fiber Supplement for Digestive Gut Health, Diarrhea Control & IBS Relief, Gluten Free Vegan Prebiotic Powder, One Month Supply
Highlights
Clinician-developed formula
Feeds healthy gut bacteria
Organic, additive-free

Firm Up stands out as a clinician-developed, all-organic fiber supplement designed to help those struggling with loose stools or diarrhea.

Its high soluble fiber content absorbs excess water in your gut, leading to firmer, more controlled bowel movements.

While it has a grainy texture and a taste reminiscent of dirt, many find these are easy quirks compared to its effective results.

We appreciate that it feeds healthy gut bacteria and supports overall digestion, hormone balance, and detox.

Plus, it's SIBO and FODMAP friendly—making it suitable for a variety of sensitive stomachs.

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Price history for Florasophy  

on Amazon

Fibercon Fiber Supplement for Ibs Diarrhea

FiberCon Fiber Therapy Coated Caplets, Safe, Simple & Comfortable Insoluble Fiber for Bowel Irregularity, Comfortable Constipation Relief with No Gas or Bloating, 140 Caplets
Highlights
No gas or bloating
Easy to swallow caplets
Chemical stimulant free

FiberCon coated caplets provide simple, effective relief from constipation without the mess of powders or the discomfort of gas and bloating.

Unlike other supplements, FiberCon's insoluble fiber works naturally — no chemical stimulants involved — which means no cramping or harsh side effects.

The caplets are easy to swallow and have no aftertaste, making them a sleek choice for quick relief.

While it can take 12 to 72 hours to see results, its safety profile and convenience make it a top pick for managing IBS-related diarrhea and constipation alike.

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Price history for Fibercon on Amazon

Iberogast

Iberogast Softgels, Herbal Relief of Stomach Upsets: Occasional Indigestion, Bloating, Gas, Nausea, Upset Stomach; 6-Herb Blend with Iberis Amara, Peppermint, Licorice, Lemon Balm; 30ct
Highlights
Clinically proven effective
Natural herbal formula
Fast relief within 30 mins

Iberogast harnesses the power of a proprietary 6-herb blend to deliver quick, effective relief, often within just 30 minutes.

Its natural herbal formula gently soothes and calms the gut, helping to reduce symptoms like bloating, nausea, and diarrhea—perfect for IBS flare-ups.

While the taste is a bit offensive and caps can be tricky to open, the clinically proven effectiveness outweighs these small inconveniences.

Plus, it supports your digestion on multiple levels—from calming nerves to supporting your gut lining—making it a reliable choice for those seeking fast, natural relief.

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Price history for Iberogast on Amazon

Vitafusion

Vitafusion Fiber Well Sugar Free Fiber Supplement, Peach, Strawberry And Blackberry Flavored Supplements, 90 Count
Highlights
Delicious fruity flavors
Sugar-free and low calorie
Easy to chew and swallow

These delicious, sugar-free gummies make fiber supplementation a treat rather than a chore.

The fruity flavors—peach, strawberry, and blackberry—are genuinely tasty, which encourages consistent use.

Each serving packs 5 grams of prebiotic fiber, supporting your digestive system and promoting regularity — often a key concern for those with IBS diarrhea.

While the chewy, rubbery texture takes a bit of getting used to, the convenience of gummies beats swallowing pills any day.

Keep in mind, for optimal results, they work best with a balanced routine and multiple daily doses.

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Price history for Vitafusion on Amazon

Medtrition Ibtrol Fiber Supplement for Ibs Diarrhea

IBtrol® 3–in–1 IBS Gut Health Supplement with Psyllium, Prebiotic and Probiotics, Manages IBS Symptoms, Gas, Bloating, Diarrhea, Constipation, Abdominal Pain 60 Servings (Natural Orange Flavor)
Highlights
Calms gut quickly
Pleasant orange flavor
Includes probiotics

IBtrol’s triple-therapy formula tackles IBS symptoms from all angles—thanks to premium blonde psyllium, a patented prebiotic, and targeted probiotics.

It quickly calms the gut and promotes regular bowel movements without needing diet restrictions.

The pleasant orange flavor makes it surprisingly enjoyable, even when mixed into drinks.

While it’s a tad pricier, the combination of long-term gut health benefits and symptom relief makes it worth considering.

Keep in mind, results can vary, and the powder may not dissolve entirely, but overall, it’s a solid, science-backed choice for managing diarrhea-predominant IBS.

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Price history for Medtrition Ibtrol on Amazon

Benefiber

Benefiber Daily Prebiotic Fiber Supplement Powder for Digestive Health, Daily Fiber Powder, Unflavored - 62 Servings (8.7 Ounces)
Highlights
Easy to dissolve
Taste-free and neutral
Prebiotics for gut health

It's incredibly easy to dissolve into your favorite foods, making it super convenient for daily use.

Its taste-free, neutral flavor means you can mix it with anything without worrying about altering your meal's flavor.

Plus, with added prebiotics, it effectively supports gut health, helping to relieve those pesky constipation issues often associated with IBS.

On the downside, some users report packaging issues and slight clumping in liquids, but overall, the benefits far outweigh these minor inconveniences.

For a low-calorie, sugar-free fiber option that packs a gut-friendly punch, this one's a solid choice.

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Price history for Benefiber on Amazon

Metamucil

Metamucil 3-in-1 Fiber Capsules, Daily Psyllium Husk Fiber Supplement, Fiber Capsules for Digestive Health, Plant-Based Psyllium Husk Fiber Capsules, #1 Doctor Recommended Fiber Brand, 300ct Capsules
Highlights
Effective digestive support
Plant-based psyllium fiber
Doctor recommended

Metamucil Daily Fiber Capsules make it easy to support digestive health with just two simple ingredients: plant-based psyllium husk fiber.

They seamlessly promote regularity, helping you feel lighter and more comfortable, especially for those dealing with IBS diarrhea.

Plus, their health benefits extend beyond digestion—they help support healthy blood sugar levels and lower cholesterol.

The capsules are convenient for on-the-go lifestyles, though they may require ample water and might feel a bit large to some.

Overall, a trusted, doctor-recommended choice for reliable fiber support.

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Price history for Metamucil on Amazon

JLM Nutritionals IBSolution Fiber Supplement for Ibs Diarrhea

IBSolution - Digestive Health Supplement, Gas, Bloating, Diarrhea, Constipation Relief, Abdominal Pain, With Psyllium, Promote Regularity, Supports Gut Health, Made in USA - 60 Vegan Capsules, 2-Pack
Highlights
All natural ingredients
Effective for regularity
Supports digestive health

This supplement combines all-natural ingredients like walnut hulls, aloe, and ginger to support regular, healthy bowel movements without the harshness of synthetic laxatives.

Its blend of superfoods and prebiotics helps soothe your digestive system, reducing bloating and diarrhea associated with IBS.

While a mild increase in gas might occur, many users find it effective after consistent use—just remember, consistency is key since it requires taking two capsules daily.

For those seeking a gentle, plant-based solution that’s affordable and made in the USA, this product is definitely worth considering.

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Price history for JLM Nutritionals IBSolution on Amazon

Now Foods Psyllium Husk

NOW Foods Supplements, Psyllium Husk Caps 500 mg, Non-GMO Project Verified, Natural Soluble Fiber, Intestinal Health*, 500 Veg Capsules
Highlights
Supports digestive health
Convenient capsule form
GMO, gluten, soy free

The NOW Psyllium Husk capsules are a natural and convenient way to support bowel regularity.

Each capsule delivers a dose of soluble fiber that can help soothe your gut and promote healthy digestion.

Since they're GMO-free, vegan, and gluten-free, they tick many boxes for clean eating.

However, keep in mind that the fiber dose per capsule is small, so you'll need to take several each day — which might be a bit of a hassle.

Overall, if you prefer capsules over powders and want a trustworthy, well-certified product, this is a strong contender for your IBS diarrhea relief.

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Price history for Now Foods Psyllium Husk on Amazon

Physician's Choice Probiotics

Physician's CHOICE Probiotics 60 Billion CFU - 10 Strains + Organic Prebiotics - Immune, Digestive & Gut Health - Supports Occasional Constipation, Diarrhea, Gas & Bloating - for Women & Men - 60ct
Highlights
Supports gut health
Survives stomach acid
Backed by science

Max Strength General Probiotic with 60 billion CFU offers a powerful punch to help ease IBS-related diarrhea and support overall gut health.

The blend of 10 diverse, high-quality strains and organic prebiotics works synergistically to promote a balanced microbiome, reducing gas, bloating, and irregularity.

Its acid-resistant capsules ensure the probiotics survive stomach acid, reaching your gut where they work their magic.

While consistent use is key, this scientifically-backed formula is a reliable choice for those seeking a natural, effective way to manage IBS symptoms.

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Price history for Physician's Choice Probiotics on Amazon

Gobiotix Fiber Supplement for Ibs Diarrhea

GOBIOTIX Prebiotic Fiber Supplement Powder for Digestive Health, Soluble Fiber for Gut Health, Gluten & Sugar Free, Keto, Vegan, 35 Servings (1 Pack)
Highlights
Tasteless and easy to mix
Supports gut health naturally
Suitable for all diets

Gobiotix’s organic prebiotic powder is a game-changer for those dealing with IBS diarrhea.

Its tasteless, easy-to-mix formula makes daily support effortless, seamlessly fitting into any diet—keto, paleo, or plant-based.

Made with nutrient-rich Nutraflora FOS, it promotes a healthy gut environment by supporting beneficial bacteria and blocking damaging lectins.

Plus, it’s free from artificial sweeteners and refined sugars, so you can feel good about what you're taking.

While it might cause mild bloating in some, its clean, supportive ingredients make it a top pick for gut health.

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Price history for Gobiotix on Amazon

Metamucil Gummies

Metamucil Fiber Gummies for Adults, No Sugar Added Orange Flavor, 5g Prebiotic Plant Based Fiber Supplement Blend, 120 Count
Highlights
Great taste, orange flavor
No sugar added
Supports digestive health

Metamucil Gummies are not only delicious with their vibrant orange flavor, but they also pack a punch with 5g of plant-based fiber per serving.

The no-sugar-added formulation makes them a guilt-free choice, especially for those managing IBS-related diarrhea.

The prebiotic inulin nourishes good gut bacteria, helping to restore balance and promote overall digestive health.

Plus, the Soluble Corn Fiber supports digestion without heavy bloating.

While some users might experience gas, the benefits of consistent fiber intake outweigh the minor side effects for most.

Overall, a tasty, effective option for quick relief and gut support.

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Price history for Metamucil Gummies on Amazon

Kirkland Fiber

Fiber Capsules Kirkland Therapy for Regularity/Fiber Supplement, 360 capsules - Compare to the Active Ingredient in Metamucil Capsules
Highlights
Eases digestion
Affordable and effective
Easy to follow directions

It provides a trusted source of soluble fiber, which is key for easing IBS diarrhea.

Its bulk-forming action helps regulate bowel movements without causing sudden cramping or discomfort.

The directions are straightforward, making it easy to incorporate into your daily routine — just remember to stay consistent.

While some folks might find the capsules a bit tough to swallow or notice a mild taste, the affordability and proven effectiveness make this a solid choice for many dealing with digestive issues.

Overall, it’s a dependable, do-it-all supplement that supports gut health in a simple way.

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Price history for Kirkland Fiber on Amazon

Garden of Life Fiber Fiber Supplement for Ibs Diarrhea

Garden of Life Raw Organic Fiber Supplement Powder - 10 Servings, 15 Organic Superfoods + Probiotics & Omega-3 ALA, 4g Soluble & 5g Insoluble Fiber for Regularity - Psyllium Free
Highlights
Supports bowel regularity
Made with superfoods
Contains probiotics

Garden of Life's Raw Organic Fiber stands out as a superfood-packed option, blending sprouted seeds, grains, and legumes like flax, quinoa, and chia, all without unnecessary fillers or added sugar.

It’s rich in probiotics and Omega 3s, which help support gut health and regularity without harsh fibers like psyllium that can irritate sensitive intestines.

Plus, its unflavored, versatile mix makes it easy to incorporate into smoothies, cereals, or even pancakes.

While the earthy taste and thickening texture may take some getting used to, it’s a nourishing, toxin-eliminating choice for those with IBS diarrhea looking for a clean, effective fiber boost.

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Price history for Garden of Life Fiber on Amazon

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