NOW Foods Glucomannan 575mg: Is NOW Glucomannan safe to take daily?

NOW Glucomannan is generally safe when taken as directed with a full glass of water. It is a natural soluble fiber from konjac root. Always take capsules with at least 8 ounces of water to prevent the fiber from expanding before reaching the stomach.

NOW Foods Glucomannan 575mg: Can glucomannan cause choking?

Glucomannan powder can pose a choking risk if taken without adequate water, as it absorbs up to 50 times its weight in water and expands rapidly. Capsule form is much safer than loose powder because it reaches the stomach before expanding. Always take with a full glass of water.

NOW Foods Glucomannan 575mg: Are there side effects of NOW Glucomannan?

Common side effects include mild bloating, gas, or loose stools, especially when first starting. These typically resolve as your digestive system adjusts. Start with a lower dose and increase gradually to minimize GI discomfort.

NOW Foods Glucomannan 575mg: Can I take NOW Glucomannan with medications?

Glucomannan may affect the absorption of some oral medications because it forms a gel in the stomach. Take medications at least 1 hour before or 4 hours after glucomannan to avoid potential interactions. Consult your healthcare provider for specific guidance.

NOW Foods Glucomannan 575mg: Is NOW Glucomannan safe during pregnancy?

Pregnant or breastfeeding women should consult their healthcare provider before taking glucomannan or any fiber supplement. While konjac fiber is a natural food ingredient, its effects on pregnancy have not been extensively studied.

NOW Foods Glucomannan 575mg: How many capsules of NOW Glucomannan should I take?

The recommended serving is 3 capsules (1,725mg total) taken 30-60 minutes before a meal with at least 8 ounces of water. You can take up to 3 servings daily (before each meal) for a total of 5,175mg, which falls within the clinical dose range.

NOW Foods Glucomannan 575mg: When should I take NOW Glucomannan?

Take glucomannan 30-60 minutes before meals with a full glass of water. This timing allows the fiber to expand in the stomach and promote a feeling of fullness before you begin eating, which may help reduce overall calorie intake.

NOW Foods Glucomannan 575mg: How much water should I drink with glucomannan?

Always take glucomannan with at least 8 ounces (250ml) of water per serving. Adequate water intake is essential both for safety and for the fiber to work properly. Drinking additional water throughout the day supports the fiber's digestive benefits.

NOW Foods Glucomannan 575mg: Can I take glucomannan before bed?

It is generally recommended to take glucomannan before meals rather than before bed. Taking it before meals allows the fiber to promote fullness and reduce calorie intake. If you take it at other times, ensure you drink plenty of water.

NOW Foods Glucomannan 575mg: How long does it take for glucomannan to work?

Glucomannan begins absorbing water and expanding within minutes of reaching the stomach. For weight management benefits, consistent use before meals over several weeks is typically needed. Individual results vary based on diet and lifestyle factors.

NOW Foods Glucomannan 575mg: What is glucomannan made from?

Glucomannan is a natural soluble fiber extracted from the root of the konjac plant (Amorphophallus konjac). It is the most viscous dietary fiber known, capable of absorbing up to 50 times its weight in water to form a gel-like substance.

NOW Foods Glucomannan 575mg: How much glucomannan is in each NOW capsule?

Each capsule contains 575mg of konjac glucomannan. The recommended serving of 3 capsules provides 1,725mg (1.7g), which falls within the clinically studied dose range of 1-4g daily for weight management and digestive benefits.

NOW Foods Glucomannan 575mg: Does NOW Glucomannan contain any additives?

NOW Glucomannan uses a simple formulation with konjac glucomannan as the active ingredient in a vegetarian capsule. It is manufactured in a GMP-certified facility and is free from common allergens. Check the label for the full inactive ingredient list.

NOW Foods Glucomannan 575mg: Is NOW Glucomannan the same as konjac root?

Glucomannan is the primary soluble fiber component extracted from konjac root. While konjac root contains other compounds, glucomannan is the active fiber responsible for the water-absorbing and gel-forming properties that provide health benefits.

NOW Foods Glucomannan 575mg: What is the capsule made from?

NOW Glucomannan uses a vegetarian capsule (hypromellose) that is suitable for vegans and vegetarians. The capsule dissolves in the stomach, releasing the glucomannan fiber which then absorbs water and expands.

NOW Foods Glucomannan 575mg: How effective is glucomannan for weight management?

Clinical trials have shown that glucomannan taken before meals can help reduce calorie intake by promoting fullness. A systematic review found modest but statistically significant weight loss when combined with a calorie-controlled diet. Results are best when used as part of an overall healthy lifestyle.

NOW Foods Glucomannan 575mg: Does NOW Glucomannan help with regularity?

Yes, as a soluble fiber, glucomannan absorbs water and adds bulk to stool, which can help promote regular bowel movements. It acts as a gentle, natural laxative when taken with adequate water. Consistent daily use supports overall digestive regularity.

NOW Foods Glucomannan 575mg: Does glucomannan lower cholesterol?

Some clinical studies suggest glucomannan may help support healthy cholesterol levels already within the normal range. The soluble fiber can bind to bile acids in the digestive tract. However, individual results vary and it should not replace prescribed cholesterol medications.

NOW Foods Glucomannan 575mg: Is NOW Glucomannan GMP certified?

Yes, NOW Foods manufactures this product in GMP-certified facilities and conducts third-party testing for purity and potency. NOW Foods has over 50 years of experience in supplement manufacturing with rigorous quality standards.

NOW Foods Glucomannan 575mg: What size are the NOW Glucomannan capsules?

The capsules are moderately large due to the fiber content. The bottle dimensions are 2.81 x 2.81 x 5.13 inches and contains 180 capsules, providing 60 servings at 3 capsules per serving. The bottle weighs approximately 7.04 ounces.

NOW Foods Glucomannan 575mg: How should I store NOW Glucomannan?

Store in a cool, dry place away from moisture and direct sunlight. Keep the bottle tightly closed when not in use. Moisture can cause the glucomannan to absorb water inside the capsules, so proper storage is important for maintaining product quality.

NOW Foods Glucomannan 575mg: How many capsules are in a bottle?

Each bottle contains 180 vegetarian capsules, providing 60 servings at the recommended dose of 3 capsules per serving. At one serving per day, this provides a 2-month supply.

NOW Foods Glucomannan 575mg: Is NOW Glucomannan suitable for vegans?

Yes, NOW Glucomannan uses a vegetarian capsule and the konjac glucomannan fiber is entirely plant-derived. It is suitable for both vegetarians and vegans as part of a plant-based diet.

NOW Foods Glucomannan 575mg: Is NOW Glucomannan gluten-free?

NOW Foods follows GMP practices and tests their products, but check the label for specific gluten-free certification. Konjac glucomannan is naturally gluten-free as it is derived from konjac root, not a grain source.

NOW Foods Glucomannan 575mg: Can I take NOW Glucomannan on a keto diet?

Yes, glucomannan is a soluble fiber with virtually zero net carbs and zero calories. It is compatible with keto, low-carb, and other restrictive diets. The fiber passes through the digestive tract without being absorbed as carbohydrate.

Nature's Way Glucomannan from Konjac Root: Is Nature's Way Glucomannan safe to take?

Nature's Way Glucomannan is generally safe when taken as directed with a full glass of water. It is a natural soluble fiber from konjac root and is TRU-ID certified for species authenticity. Always take capsules with at least 8 ounces of water to ensure the fiber reaches the stomach before expanding.

Nature's Way Glucomannan from Konjac Root: Can Nature's Way Glucomannan cause choking?

Like all glucomannan products, there is a choking risk if taken without adequate water. The capsule form is safer than loose powder because it reaches the stomach before the fiber begins to expand. Always swallow capsules with a full glass of water and do not take the product dry.

Nature's Way Glucomannan from Konjac Root: Are there side effects from Nature's Way Glucomannan?

Mild bloating, gas, or changes in bowel habits may occur initially, especially at higher doses. These effects typically resolve within a few days. Starting with a lower dose and gradually increasing can minimize gastrointestinal discomfort.

Nature's Way Glucomannan from Konjac Root: Can I take Nature's Way Glucomannan with medications?

Glucomannan may reduce the absorption of some oral medications by forming a gel in the digestive tract. Take medications at least 1 hour before or 4 hours after glucomannan. Consult your healthcare provider if you are on prescription medications.

Nature's Way Glucomannan from Konjac Root: Is Nature's Way Glucomannan safe for diabetics?

Some research suggests glucomannan may help support healthy blood sugar levels, but diabetics should consult their healthcare provider before use. Glucomannan can affect the absorption of medications, including diabetes drugs, so timing and monitoring are important.

Nature's Way Glucomannan from Konjac Root: How many capsules of Nature's Way Glucomannan should I take?

The recommended serving is 3 capsules (1,995mg total) taken before a meal with at least 8 ounces of water. This provides nearly 2 grams of glucomannan per serving, the highest dose per serving among comparable products.

Nature's Way Glucomannan from Konjac Root: When should I take Nature's Way Glucomannan?

Take 3 capsules 30-60 minutes before meals with a full glass of water. This allows the fiber to expand in the stomach and promote satiety before eating. You can take up to 3 servings daily before breakfast, lunch, and dinner.

Nature's Way Glucomannan from Konjac Root: How much water should I drink with this glucomannan?

Drink at least 8 ounces (250ml) of water per serving. Adequate hydration is critical for both safety and effectiveness. Continue drinking water throughout the day to support the digestive benefits of the soluble fiber.

Nature's Way Glucomannan from Konjac Root: Can I take fewer capsules to start?

Yes, starting with 1-2 capsules per serving and gradually increasing to the full 3-capsule serving is a reasonable approach. This allows your digestive system to adjust to the increased fiber intake and may reduce initial bloating or gas.

Nature's Way Glucomannan from Konjac Root: What is the maximum daily dose of Nature's Way Glucomannan?

You can take up to 3 servings per day (9 capsules total, providing approximately 6 grams of glucomannan), ideally split before main meals. This is within the clinical dose range of 1-4g per meal used in research studies. Start with one serving daily and increase gradually.

Nature's Way Glucomannan from Konjac Root: What is in Nature's Way Glucomannan?

Each 3-capsule serving provides 1,995mg of konjac root glucomannan, the highest per-serving dose among our reviewed products. Nature's Way sources its konjac from verified suppliers and the product is TRU-ID certified for plant species authenticity.

Nature's Way Glucomannan from Konjac Root: What does TRU-ID certification mean?

TRU-ID is an independent certification program that uses DNA-based testing to verify the botanical species used in a supplement. This means the konjac glucomannan in this product has been scientifically verified to be from the correct plant species (Amorphophallus konjac).

Nature's Way Glucomannan from Konjac Root: Is Nature's Way Glucomannan vegan?

Yes, this product is labeled as vegan. The glucomannan fiber is plant-derived from konjac root, and the capsule formulation is free from animal-derived ingredients. It is suitable for vegetarian and vegan diets.

Nature's Way Glucomannan from Konjac Root: Does Nature's Way Glucomannan contain any allergens?

This product is Non-GMO and free from common allergens including gluten, dairy, and soy. It uses a simple formulation focused on delivering konjac glucomannan. Check the label for the complete ingredient and allergen information.

Nature's Way Glucomannan from Konjac Root: What makes Nature's Way different from other glucomannan brands?

Nature's Way offers the highest dose per serving (nearly 2g) among comparable products and is one of the few glucomannan supplements with TRU-ID certification for species verification. The brand has decades of herbal supplement heritage and wide retail availability.

Nature's Way Glucomannan from Konjac Root: How effective is Nature's Way Glucomannan for weight management?

At 1,995mg per serving, this product provides one of the highest glucomannan doses available. Clinical studies using 1-4g of glucomannan daily before meals have shown modest but significant reductions in body weight when combined with a calorie-controlled diet.

Nature's Way Glucomannan from Konjac Root: Does Nature's Way Glucomannan help with appetite?

Glucomannan absorbs water and expands in the stomach, creating a feeling of fullness that may help reduce calorie intake at meals. Taking it 30-60 minutes before eating with plenty of water is key to this satiety effect. Individual results vary.

Nature's Way Glucomannan from Konjac Root: Does Nature's Way Glucomannan support digestive health?

As a soluble fiber, glucomannan supports digestive health by promoting regularity and adding bulk to stool. It can serve as a prebiotic, feeding beneficial gut bacteria. Consistent use with adequate water supports overall digestive function.

Nature's Way Glucomannan from Konjac Root: Is Nature's Way a trusted brand?

Nature's Way has been in the herbal supplement industry since 1969 and is one of the most recognized natural supplement brands. Their TRU-ID certification adds a layer of scientific verification not commonly found among competitors.

Nature's Way Glucomannan from Konjac Root: What size are Nature's Way Glucomannan capsules?

The capsules are standard supplement capsules. The bottle dimensions are 2.42 x 2.42 x 4.46 inches and contains 100 capsules, providing approximately 33 servings at 3 capsules per serving. The bottle weighs about 3.53 ounces.

Nature's Way Glucomannan from Konjac Root: How should I store Nature's Way Glucomannan?

Store in a cool, dry place with the cap tightly closed. Keep away from moisture, as glucomannan readily absorbs water. Store at room temperature away from direct sunlight and heat to maintain product quality throughout the shelf life.

Nature's Way Glucomannan from Konjac Root: How many capsules are in a bottle of Nature's Way Glucomannan?

Each bottle contains 100 capsules. At the recommended serving of 3 capsules, this provides approximately 33 servings. For daily use at one serving per day, a single bottle lasts about one month.

Best Glucomannan Supplements (2026)

· Updated April 2026

Lab Tested, Evidence Ranked

Supplement Science Editorial Team·Evidence-Based Supplement Research

Published Mar 11, 2026·Reviewed Apr 22, 2026

2,500+Clinical Studies Cited

3Glucomannan products evaluated

This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Our Verdict

The best glucomannan supplement provides 1-3g of konjac glucomannan per serving in capsule form, taken 30 minutes before meals with a full glass of water for effective appetite management and regularity.

Best By Category

#1Best Overall

NOW Foods Glucomannan 575mg

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#3Best Value

Nutricost Glucomannan 1,800mg

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#2Best Brand Recognition

Nature's Way Glucomannan from Konjac Root

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The best glucomannan supplement provides 1-3g per serving in capsules taken with a full glass of water 30 minutes...

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We reviewed 15+ glucomannan supplements across dose per serving, form (capsule vs powder), serving convenience, third-party testing, and value. Our picks prioritize products that deliver clinically effective doses in a safe, convenient format.

As an Amazon Associate, we earn from qualifying purchases. Some links below are affiliate links — this doesn't affect our editorial independence or product ratings. How we evaluate products

How We Chose These Products

Products are ranked using our published scoring methodology — evidence strength, dose adequacy, ingredient form, third-party testing signals, value, and clean-label factors are weighted across the 5 criteria below. Commercial relationships do not determine our editorial rankings.

Dose Adequacy

30%

Clinical trials showing weight management and satiety benefits use 1-4g glucomannan daily, typically 1g before each of three meals. Products should deliver at least 1g per serving for clinical relevance.

Safety & Form

25%

Capsules are strongly preferred over loose powder because glucomannan expands rapidly and can cause choking if powder contacts the throat before reaching the stomach. Always take with a full glass of water.

Convenience

20%

Fewer capsules per serving improves compliance. Products requiring 5+ capsules per serving are less convenient than those delivering adequate doses in 2-3 capsules.

Third-Party Testing

15%

Independent verification ensures konjac glucomannan purity and accurate fiber content per serving.

Value

10%

Cost per gram of glucomannan, adjusted for form and serving convenience.

#1 Top Pick

Glucomannan 575mg

NOW Foods

3,796 Amazon reviews

9/10

4.2

Delivers 1,725mg (1.7g) glucomannan per 3-capsule serving — well within the clinical dose range. NOW Foods is a GMP-certified manufacturer with 50+ years of quality history. Capsule form is safe and convenient. At $0.12/serving, it offers the best combination of dose, quality, and value.

IngredientKonjac Glucomannan (Amorphophallus konjac root)

Dose575mg glucomannan per capsule (3 capsules = 1,725mg per serving)

FormCapsule

TestingGMP Certified, Third-Party Tested

575mg glucomannan per capsule (3 capsules = 1,725mg per serving)Clinical range: 3 g daily (1 g before each main meal)

Below clinical dose

$0.28/serving$16.52 · 60 Servings

Pros

Clinical dose (1.7g per serving)
GMP-certified, third-party tested
Best overall value at $0.12/serving

Cons

Requires 3 capsules per serving
Must take with full glass of water

Buy Nowon Amazon

Read full review →

Quick Comparison

#1NOW Foods Glucomannan 575mg

9/10

NOW Foods

#1 Top Pick

3,796 Amazon reviews

Best for: Clinical-dose konjac glucomannan for appetite and regularity

Konjac Glucomannan (Amorphophallus konjac root) · 575mg glucomannan per capsule (3 capsules = 1,725mg per serving)

Capsule · GMP Certified, Third-Party Tested

$16.52

$0.28/serving

Buy Nowon Amazon

#2Nature's Way Glucomannan from Konjac Root

8.8/10

Nature's Way

4,156 Amazon reviews

Best for: TRU-ID certified konjac root from a trusted brand

Konjac Root Glucomannan · 1,995mg glucomannan per serving (3 capsules)

Capsule · TRU-ID Certified, Third-Party Tested

$12.50

$0.21/serving

Buy Nowon Amazon

#3Nutricost Glucomannan 1,800mg

8.7/10

Nutricost

4,858 Amazon reviews

Best for: High-dose glucomannan at low cost per serving

Konjac Root Glucomannan · 1,800mg glucomannan per serving (3 capsules)

Capsule · Third-Party Tested

$16.95

$0.28/serving

Buy Nowon Amazon

#	Product	Best For	Ingredient & Dose	Form & Testing	Price	Rating
1	NOW Foods Glucomannan 575mg #1 Top Pick 3,796 Amazon reviews	Clinical-dose konjac glucomannan for appetite and regularity	Konjac Glucomannan (Amorphophallus konjac root) 575mg glucomannan per capsule (3 capsules = 1,725mg per serving)	Capsule 60 Servings GMP Certified, Third-Party Tested	$16.52 $0.28/serving	9/10	Buy Nowon Amazon
2	Nature's Way Glucomannan from Konjac Root 4,156 Amazon reviews	TRU-ID certified konjac root from a trusted brand	Konjac Root Glucomannan 1,995mg glucomannan per serving (3 capsules)	Capsule 60 Servings TRU-ID Certified, Third-Party Tested	$12.50 $0.21/serving	8.8/10	Buy Nowon Amazon
3	Nutricost Glucomannan 1,800mg 4,858 Amazon reviews	High-dose glucomannan at low cost per serving	Konjac Root Glucomannan 1,800mg glucomannan per serving (3 capsules)	Capsule 60 Servings Third-Party Tested	$16.95 $0.28/serving	8.7/10	Buy Nowon Amazon

Detailed Reviews

#1 Top Pick

NOW Foods Supplements, Glucomannan (Amorphophallus konjac) 575 mg, Supports Regularity, Healthy Weight Management, 180 Veg Capsules

NOW Foods

3,796 Amazon reviews

9/10

(3,796)

IngredientKonjac Glucomannan (Amorphophallus konjac root)

Dose575mg glucomannan per capsule (3 capsules = 1,725mg per serving)

FormCapsule

TestingGMP Certified, Third-Party Tested

575mg glucomannan per capsule (3 capsules = 1,725mg per serving)Clinical range: 3 g daily (1 g before each main meal)

Below clinical dose

$0.28/serving$16.52 · 60 Servings

Ideal for: Clinical-dose konjac glucomannan for appetite and regularity

Not ideal for: Those who dislike taking multiple capsules per serving.

Pros

Clinical dose (1.7g per serving)
GMP-certified, third-party tested
Best overall value at $0.12/serving
Safe capsule form

Cons

Requires 3 capsules per serving
Must take with full glass of water
Moderately large capsules
Unflavored

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Read full Konjac Glucomannan (Amorphophallus konjac root)guide →

Nature's Way Herbal Glucomannan from Konjac Root Capsules, Promotes Feelings of Fullness*, 1,995 mg per 3-Capsule Serving, Non-GMO Project Verified, Vegan, 100 Capsules (Packaging May Vary)

Nature's Way

4,156 Amazon reviews

8.8/10

(4,156)

Highest dose per serving on our list at nearly 2g per 3-capsule serving. Nature's Way is one of the most trusted herbal supplement brands with TRU-ID certification — DNA-based authenticity testing that verifies the plant species used. Established brand with wide retail availability. Delivers a robust clinical dose.

IngredientKonjac Root Glucomannan

Dose1,995mg glucomannan per serving (3 capsules)

FormCapsule

TestingTRU-ID Certified, Third-Party Tested

1,995mg glucomannan per serving (3 capsules)Clinical range: 3 g daily (1 g before each main meal)

Partial dose

$0.21/serving$12.50 · 60 Servings

Ideal for: TRU-ID certified konjac root from a trusted brand

Not ideal for: Budget-focused shoppers who can find equal quality for less.

Pros

Highest dose (2g per serving)
TRU-ID certified (DNA-verified species)
Trusted heritage brand
Widely available

Cons

Slightly higher price ($0.14/serving)
Requires 3 capsules
Premium for brand recognition
No added prebiotics or fiber types

Buy Nowon Amazon

Read full Konjac Root Glucomannanguide →

Nutricost Glucomannan 1,800mg Per Serving, 180 Capsules - Natural Fiber Source, Non-GMO, Gluten Free

Nutricost

4,858 Amazon reviews

8.7/10

(4,858)

Delivers a generous 1,800mg (1.8g) per 3-capsule serving at the lowest price on our list. Third-party tested for purity. Nutricost focuses on simple, effective, no-frills formulations at competitive prices. 180-capsule bottle provides 60 servings — a two-month supply when taken once daily.

IngredientKonjac Root Glucomannan

Dose1,800mg glucomannan per serving (3 capsules)

FormCapsule

TestingThird-Party Tested

1,800mg glucomannan per serving (3 capsules)Clinical range: 3 g daily (1 g before each main meal)

Partial dose

$0.28/serving$16.95 · 60 Servings

Ideal for: High-dose glucomannan at low cost per serving

Not ideal for: Those wanting a premium brand or additional fiber types.

Pros

Best value at $0.09/serving
1.8g per serving (clinical dose)
Third-party tested
60 servings per bottle

Cons

Less established brand
Limited sourcing information
No GMP certification listed
Basic no-frills product

Buy Nowon Amazon

Read full Konjac Root Glucomannanguide →

How to Choose

How to Take Glucomannan Safely

Always take glucomannan capsules with at least 8oz (250ml) of water 30-60 minutes before a meal. Never take glucomannan powder dry or with insufficient water — it can expand in the throat and cause choking. Capsule form ensures the fiber reaches the stomach before expanding. Start with 1g per day and increase gradually to reduce GI side effects like bloating.

Dosing for Weight Management

Clinical trials use 1-4g glucomannan daily, typically split as 1g before each of three main meals. A 2005 meta-analysis (Sood et al.) found that glucomannan supplementation at 2-4g daily led to modest but significant weight loss compared to placebo. Effects are amplified when combined with a calorie-controlled diet.

Ready to Buy?

NOW Foods Glucomannan 575mg

9/10$0.28/servingBest for: Clinical-dose konjac glucomannan for appetite and regularity

Evidence:Meta-analysis (2008) · 14 RCTs · n=531 · moderate confidence[#1]

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Read Our Full Glucomannan Research Guide

Evidence level, dosage, side effects, and more →

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Frequently Asked Questions

Does glucomannan actually help with weight loss?

Yes, modestly. A 2008 systematic review and meta-analysis (n=531) found that glucomannan supplementation (2-4g daily before meals) produced significant weight loss compared to placebo ^[1]. The mechanism is mechanical — glucomannan absorbs water and expands in the stomach, promoting fullness and reducing calorie intake at the subsequent meal ^[1]. Results are best when combined with a calorie-controlled diet.

Evidence:Meta-analysis (2008) · 14 RCTs · n=531 · moderate confidence[#1]

Is glucomannan safe?

Glucomannan is generally safe when taken as capsules with plenty of water. The main risk is esophageal obstruction if taken as dry powder without adequate liquid. Always take with at least 8oz of water. Common side effects include bloating, gas, and loose stools, which typically resolve as the body adjusts. Glucomannan may delay absorption of oral medications — take medications 1 hour before or 4 hours after.

When should I take glucomannan for best results?

Take glucomannan 15-30 minutes before meals with at least 8 ounces of water. The fiber needs to expand in the stomach to promote fullness and slow carbohydrate absorption. Never take capsules with insufficient liquid because of the documented choking/blockage risk.

How much glucomannan should I take daily?

The EFSA-approved dose for weight management is 3g daily, typically split into 1g doses before three main meals. Starting at 1-2g daily and increasing gradually reduces bloating and gas while the gut adapts.

Continue Reading

Supplement Guide

References

Meta-analysisSood N, Baker WL, Coleman CI (2008). Effect of glucomannan on plasma lipid and glucose concentrations, body weight, and blood pressure: systematic review and meta-analysis. American Journal of Clinical Nutrition. DOI PubMed
ReviewEFSA Panel on Dietetic Products, Nutrition and Allergies (2010). Scientific opinion on the substantiation of health claims related to konjac mannan (glucomannan). EFSA Journal. DOI

Best Glucomannan Supplements (2026)

Our Verdict

Best By Category

How We Chose These Products

Dose Adequacy

Safety & Form

Convenience

Third-Party Testing

Value

Glucomannan 575mg

Pros

Cons

Quick Comparison

Detailed Reviews

NOW Foods Supplements, Glucomannan (Amorphophallus konjac) 575 mg, Supports Regularity*, Healthy Weight Management*, 180 Veg Capsules

Pros

Cons

Nature's Way Herbal Glucomannan from Konjac Root Capsules, Promotes Feelings of Fullness*, 1,995 mg per 3-Capsule Serving, Non-GMO Project Verified, Vegan, 100 Capsules (Packaging May Vary)

Pros

Cons

Nutricost Glucomannan 1,800mg Per Serving, 180 Capsules - Natural Fiber Source, Non-GMO, Gluten Free

Pros

Cons

How to Choose

How to Take Glucomannan Safely

Dosing for Weight Management

Ready to Buy?

Related Supplements

Related Conditions

Learn More

Frequently Asked Questions

Does glucomannan actually help with weight loss?

Is glucomannan safe?

When should I take glucomannan for best results?

How much glucomannan should I take daily?

Continue Reading

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References

NOW Foods Supplements, Glucomannan (Amorphophallus konjac) 575 mg, Supports Regularity, Healthy Weight Management, 180 Veg Capsules