Struggling with diarrhea can be uncomfortable and disruptive, but soluble fiber supplements may offer gentle relief by helping to normalize bowel movements.
These supplements work by absorbing excess water in the intestines, creating a gel-like consistency that eases diarrhea while supporting healthy digestion.
Choosing the right product can be challenging due to the wide variety of fibers available, including psyllium, inulin, and acacia gum.
This guide highlights the top 10 best soluble fiber supplements specifically designed to help manage diarrhea. Each option has been selected for effectiveness, quality, and ease of use to support digestive health safely and naturally.
10. MRM Nutrition Whole Food Organic Fiber
A blend of insoluble and soluble fibers, MRM Nutrition Whole Food Organic Fiber is crafted to support digestive health and regularity while keeping bloating and gas to a minimum.
Every scoop delivers 6 g of clean, plant‑based fiber sourced from organic fruits and vegetables, plus added enzymes and prebiotics that help break down food and feed beneficial gut microbes.
The formula is completely natural—no artificial flavors, colors, or sweeteners—so you can feel confident about what you’re putting into your body.
Simply stir one scoop into at least 10 oz of water, juice, cereal, yogurt, or a smoothie, and it mixes effortlessly, making it easy to boost fiber intake any time of day.
Certified gluten‑free, vegan, non‑GMO, and USDA organic, this product fits a wide range of dietary preferences and lifestyle needs.
Whether you’re looking to improve regularity, support gut health, or simply add more wholesome fiber to your meals, this versatile powder is a convenient, clean‑label solution.
Pros
- Supports regularity with minimal bloating
- All‑natural ingredients, no artificial additives
- Easy mixing into water, juice, or foods
- Gluten‑free, vegan, non‑GMO, USDA organic certified
- Enzymes and prebiotics enhance nutrient absorption
Cons
- Requires at least 10 oz liquid per scoop
- May need multiple servings for high fiber goals
- Powder texture can be gritty for some users
9. Benefiber Daily Prebiotic Fiber Supplement Powder
Benefiber Daily Prebiotic Fiber Supplement Powder delivers 62 servings of clean, plant‑based fiber in an 8.7‑ounce bottle. Each scoop is made from wheat dextrin, a soluble, prebiotic fiber that feeds the beneficial bacteria in your gut, helping to close the daily “fiber gap.”
The unflavored formula mixes clear and completely into any non‑carbonated beverage or soft food, leaving no grit or aftertaste. Because it supports GLP‑1 production, you’ll feel fuller longer, which can aid weight‑management goals.
As America’s #1 prebiotic brand, Benefiber is trusted for daily digestive health and is HSA/FSA eligible, making it a convenient, budget‑friendly addition to any routine.
Pros
- Dissolves clear, no grit or taste
- Plant‑based wheat dextrin fuels good bacteria
- Helps you feel fuller longer, GLP‑1 support
- Unflavored, easy to add to any drink or food
- HSA/FSA eligible for cost‑effective purchasing
Cons
- Only suitable for non‑carbonated liquids
- May cause mild gas if increased quickly
- Not a complete source of all nutrients
8. Nature’s Bounty Psyllium Husk Capsules
A powerful, plant‑based fiber boost, this 300‑capsule bottle delivers a 3‑in‑1 blend of psyllium husk, chicory root inulin, and acacia Senegal.
Sourced from authentic Indian psyllium, each serving provides 1,500 mg of soluble fiber (1,395 mg husk hulls, 75 mg inulin, 30 mg acacia) to support regularity and feed beneficial gut microbes.
With three capsules a day, you get a 100‑day supply, perfect for busy lifestyles. The formula is non‑GMO, free from gluten, dairy, eggs, peanuts, soy, wheat, and yeast, and is made in the USA under third‑party lab testing.
While the statements haven’t been evaluated by the FDA, this supplement offers a convenient, natural way to increase daily fiber intake and promote digestive health.
Pros
- High‑potency 1,500 mg fiber blend per serving
- 100‑day supply reduces refill hassle
- Prebiotic combo fuels healthy gut bacteria
- Non‑GMO, allergen‑free, USA‑made quality
- Easy three‑capsule daily routine
Cons
- Capsules may be large for some
- Needs consistent water intake
- Not a substitute for medical advice
7. Gobiotix Optifi Powder
GOBIOTIX Fiber Supplement Powder delivers a clean, plant‑based source of soluble fiber that quietly supports daily gut balance. The organic blend is rich in natural prebiotic fibers, nurturing beneficial bacteria without the gritty texture of psyllium husk.
Because it’s completely unflavored, it dissolves smoothly into water, smoothies, coffee, or any favorite beverage—no clumps, no gel, just a light, barely‑there mouthfeel.
Designed with keto, low‑carb, vegan, and paleo lifestyles in mind, this 35‑serving (one‑month) pack fits effortlessly into any routine. Every scoop provides a gluten‑free, sugar‑free boost of fiber without artificial sweeteners, fillers, or synthetic additives.
Made in the USA at a GMP‑certified, FDA‑registered facility, each batch meets strict purity standards, giving you confidence that you’re fueling your digestive health with a premium, trustworthy product.
Whether you’re looking to debloat, support GLP‑1 function, or simply keep your system moving, GOBIOTIX offers a hassle‑free way to meet your daily fiber goals while maintaining the taste and texture you love.
Pros
- Smooth, clump‑free mix in any drink
- Plant‑based prebiotic fiber supports gut bacteria
- Keto‑friendly, vegan, and paleo‑compatible formula
- No sugar, artificial sweeteners, or fillers
- Made in a GMP‑certified, FDA‑registered facility
Cons
- Unflavored may feel bland to some
- Requires consistent daily use for best results
- Not a source of protein or other nutrients
6. Zebora Soluble Fiber Powder
Zebora Soluble Fiber Powder is an unflavored, prebiotic dietary supplement designed to support daily digestive health and overall wellness.
Each scoop blends high‑quality plant‑based fibers — including acacia, oat, corn, and citrus pectin — delivering 5 g of soluble fiber per serving to help nourish beneficial gut bacteria, promote regular bowel movements, and maintain appetite control without altering the taste of your beverages or recipes.
With zero sugar, zero fat, and low calories, this easy‑mix powder dissolves smoothly into water, smoothies, or meals, making it a convenient addition to any routine. Ideal for adults seeking gentle digestive support, balanced metabolism, and enhanced gut comfort.
Pros
- Supports digestive health and regularity
- Contains prebiotic soluble fiber to nourish gut flora
- Unflavored and easy to mix
- Zero sugar and low calorie
- 70 servings per container
Cons
- May clump if not stirred thoroughly
- Requires drinking enough water
- Results vary by individual needs
5. Nature’s Bounty Ultra Fiber 150ct Caplets
Ultra‑Fiber Caplets deliver a powerful, balanced blend of soluble and insoluble fiber in a tiny, easy‑to‑swallow tablet. Each caplet packs 48 % more fiber than the leading psyllium capsule, letting you boost your daily intake without the bulk of powders or the hassle of mixing.
Sourced from chicory, citrus, psyllium, oats, apples, and prunes, the formula provides a natural mix of both fiber types to promote regularity without the bloating and gas that many supplements cause.
The coated caplets glide down smoothly, making them perfect for on‑the‑go lifestyles—just pop one with water and you’re set. Designed for everyday use, Ultra‑Fiber fits seamlessly into a well‑balanced diet, helping you meet your fiber goals consistently and comfortably.
Pros
- 48 % more fiber per compact caplet
- Balanced soluble & insoluble blend supports gentle regularity
- Six plant‑based sources ensure diverse nutritional benefits
- No mixing required; mess‑free daily routine
- Easy‑to‑swallow coated tablets for convenience
Cons
- May be pricier than bulk powder options
- Requires water for optimal swallowing experience
- Not suitable for those with severe fiber sensitivities
4. Florasophy Firm Up Organic Fiber Supplement
Florasophy Firm Up is a clinician‑developed, organic soluble‑fiber powder designed to turn “runny” days into regular, well‑formed bowel movements.
Each tablespoon delivers over 5 g of soluble fiber from organic psyllium seed, acacia gum, chia seed powder, glucomannan and Sunfiber, which absorb water, bulk up stool and help bind toxins, hormones and cholesterol for natural detoxification.
The blend acts as a prebiotic, feeding beneficial gut microbes while supporting heart health, hormone balance, hunger regulation and clearer skin.
Gluten‑free, vegan and free of inulin, nuts, egg, soy and dairy, Firm Up is also SIBO‑ and FODMAP‑friendly—making it a gentle option for those prone to diarrhea, IBS or frequent urgent trips to the bathroom.
Users typically notice firmer stools from day 1, with continued use over 2–3 months bringing better sleep, more energy and improved metabolism. As with any supplement, the statements have not been evaluated by the FDA and it is not intended to diagnose, treat, cure or prevent disease.
Pros
- Firm, well‑formed stools within 24 hours
- Over 5 g soluble fiber per serving
- Organic, vegan, gluten‑free formula
- Prebiotic blend supports a strong microbiome
- Includes chia seed for extra intestinal health
Cons
- Requires daily mixing with liquid
- May cause mild bloating initially
- Not a substitute for medical treatment
3. Benefiber Daily Prebiotic Powder
Benefiber Daily Prebiotic Fiber Supplement Powder is a convenient, unflavored way to fill the daily fiber gap and support digestive health. Each 17.6‑ounce bottle delivers 125 servings of plant‑based wheat dextrin, a prebiotic fiber that feeds the good bacteria in your gut.
The formula is sugar‑free, gluten‑free, and low‑calorie, making it a smart addition to any diet. Because it’s taste‑free and grit‑free, it dissolves completely and transparently in non‑carbonated drinks, smoothies, or soft foods—no clumps, no aftertaste.
Regular use helps maintain a balanced microbiome, supports GLP‑1 for longer satiety, and contributes to overall gut harmony. Benefiber is America’s #1 prebiotic fiber brand, and this product is HSA/FSA eligible, so you can enjoy the health benefits while maximizing your benefits.
Pros
- Dissolves clear, no gritty texture
- Sugar‑free, gluten‑free, low‑calorie formula
- Supports GLP‑1 for longer fullness
- Nourishes good gut bacteria daily
- HSA/FSA eligible for easy reimbursement
Cons
- Requires mixing into liquids
- May need several servings for effect
- Not suitable for wheat‑allergic individuals
2. Physician’s CHOICE Easy Mix Fiber
Physician’s CHOICE Easy Mix Fiber delivers 6 g of natural prebiotic soluble fiber per serving to support healthy digestion, balanced hunger, and regularity.
Developed with doctors, this unflavored powder blends effortlessly into hot or cold beverages—no clumps, no grit, and absolutely no sugar or artificial ingredients.
The formula combines two clinically‑studied prebiotic sources that feed the beneficial microbes already present in your gut, helping you feel fuller between meals while maintaining smooth, stool‑forming consistency unlike traditional psyllium husk.
Each batch is 3rd‑party tested for safety, purity, and potency, and is manufactured in the USA under strict quality controls using both imported and domestic ingredients.
Whether you’re adding it to your morning coffee, post‑workout shake, or a simple glass of water, Easy Mix Fiber makes meeting daily fiber goals simple and enjoyable.
Pros
- Doctor‑developed prebiotic fiber blend
- Mixes instantly, no grit or sludge
- Sugar‑free, no artificial additives
- Supports fullness and balanced hunger
- Third‑party tested for purity and potency
Cons
- Unflavored may feel bland to some
- Requires stirring or shaking for full dissolve
- Not a source of soluble vitamins
1. NOW Foods Psyllium Husk Caps 500 mg
NOW Foods Psyllium Husk Caps deliver a potent 500 mg dose of natural soluble fiber in each vegetarian capsule. When mixed with liquid, the husk swells up to 50 times its size, creating a gentle bulking effect that supports regularity and overall gastrointestinal health*.
In today’s diet, fiber intake often falls short of recommendations; these caps provide a convenient, non‑GMO way to bridge that gap.
The formula is certified Non‑GMO Project Verified, Kosher, Vegan/Vegetarian, soy‑free, gluten‑free, corn‑free, and keto‑friendly—making it suitable for a wide range of dietary preferences.
Every batch is produced in a U.S. facility that holds an A‑rated GMP certification from the NPA, ensuring rigorous testing for stability, potency, and purity.
Packaged by a family‑owned company that has been operating since 1968, you can trust the heritage and quality behind each bottle of 200 veg capsules.
Pros
- Supports regularity with bulking fiber action
- Easy, convenient daily fiber boost
- Fully plant‑based, vegan‑friendly capsules
- Certified Non‑GMO, Kosher, gluten‑free
- Made in USA with A‑rated GMP standards
Cons
- Requires adequate water intake
- May cause mild bloating initially
- Capsule size may be large for some users
Frequently Asked Questions
Which soluble fiber supplement is most effective for managing diarrhea?
A high-quality, pure psyllium husk supplement (e.g., Metamucil or generic psyllium powder) is often considered the best option. Psyllium absorbs excess water in the gut, forming a gel that slows transit time and helps solidify stools without causing bloating when taken with adequate fluid.
How should I take a soluble fiber supplement to relieve diarrhea?
- Start low: Begin with ½ – 1 teaspoon (≈2.5–5 g) of powder mixed in at least 8 oz of water or juice.
- Increase gradually: If tolerated, increase to 1–2 tablespoons per day, split into two doses.
- Stay hydrated: Drink an extra 8–12 oz of fluid with each dose to prevent constipation.
- Timing: Take it away from meals or medications that may be affected (e.g., antibiotics, blood thinners) – usually 30 minutes before or 2 hours after eating.
Are there any side effects or precautions I should know about?
- Potential bloating or gas if you start with a high dose too quickly.
- Risk of choking: Always mix the supplement thoroughly with plenty of liquid; never take it dry.
- Medical conditions: Consult a doctor before use if you have IBS‑C, bowel obstruction, or severe constipation.
- Medication interactions: Psyllium can reduce absorption of certain drugs (e.g., lithium, digoxin); separate dosing by at least 2 hours.
When used correctly, soluble fiber supplements can safely and effectively help normalize stool consistency during episodes of diarrhea.
Conclusion
Choosing the right soluble fiber supplement can transform how you manage diarrhea, offering gentle regulation of bowel movements while supporting overall gut health.
The most effective options share common traits: high-quality, fermentable fibers that absorb excess water, promote the growth of beneficial bacteria, and are easy on the stomach.
Prioritizing products with minimal additives, clear dosing instructions, and proven tolerability will help you stay comfortable and maintain nutrient absorption during recovery.
By integrating a reliable soluble fiber source into your routine, you empower your digestive system to find balance faster, reducing the disruption diarrhea can cause and supporting a smoother return to everyday life.
