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Glucomannan is a source of dietary fiber derived from the root of konjac plants (Amorphophallus konjac) found in Asian countries. It’s popularly used as a natural supplement for digestive health and weight management [1]

Glucomannan can promote satiety or the feeling of fullness. This is because glucomannan has high water solubility, whereby even a small amount added to a glass of water can turn the entire content into a gel-like substance [2]. Therefore, glucomannan supplements can absorb water in the stomach, expand it, and consequently reduce appetite [3].  

Moreover, glucomannan also acts as a dietary fiber to improve digestive health and bowel habits. There is evidence that glucomannan supplements regulate LDL cholesterol and blood sugar levels, too [4]

So, without further ado, let’s explore where you can purchase glucomannan supplements that can help improve your health and well-being!

Quick Summary

Best For High Strength: Organic Glucomannan Konjack Powder

Great For Easy Swallowing: NOW Foods Glucomannan 

Best For Budget-Friendly: Swanson Glucomannan

Product name Glucomannan content (mg) Price / Amount Direction to use 
Organic Glucomannan Konjack Powder2000~ $20 / 10 ozTake ½ scoops and mix into your choice of food or beverage 
Bulk Supplements Glucomannan Extract2000~ $14 / 3.5 ozTake ¾ tablespoon once or twice daily with at 8oz of water  
NOW Foods Glucomannan1725~ 14 / 180 capsules Take 3 capsules 1 to 2 times daily with at least 8 oz of water 30-45 minutes before a meal
Nature’s Way Glucomannan from Konjac Root1995~ $12 / 100 capsulesTake 3 capsules with at least 8 oz. of liquid (full glass) approximately 20 minutes before mealtime.
Swanson Glucomannan665~ $7 / 90 capsules Take one capsule with a full glass of water before each meal.

Best Glucomannan Supplements

Organic Glucomannan Konjack Powder

glucomannan supplements
GLUCOMANNAN CONTENT (mg):

2000

PRICE / AMOUNT:

~ $20 / 10 oz

DIRECTION TO USE:

Take ½ scoops and mix into your choice of food or beverage

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Pros

  • GMO-free 
  • Vegan and keto-friendly 
  • Eco-friendly packaging 
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Cons

  • Complaints of unpleasant taste

This raw, natural, and filler-free product is an excellent choice of glucomannan powder. Microingredients Organic Glucomannan Konjac Powder comes with a free scoop to make it easier for you to measure and consume. You can take it at any time of the day, together with your smoothies and meals. 

This helps deliver myriad nutritional values to your body, including healthy metabolism and bowel regularity. Besides, this glucomannan supplement comes in recyclable and earth-friendly packaging. So you’re not only keeping your health in check but also reducing your carbon footprint while using this brand. 


Bulk Supplements Glucomannan Extract

glucomannan supplements
GLUCOMANNAN CONTENT (mg):

2000

PRICE / AMOUNT:

~ $14 / 3.5 oz

DIRECTION TO USE:

Take ¾ tablespoon once or twice daily with 8oz of water, or as directed by a physician  

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Pros

  • No additives
  • Gluten-free 
  • Free of added sugar  
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Cons

  • May be difficult to dissolve 
  • Doesn’t have non-GMO certification 

This glucomannan powder is sourced directly from natural konjac roots. It has a high fiber content, which helps to aid digestive activities and maintain healthy cholesterol levels. When taken together with a balanced diet and exercise routine, Bulk Supplements Glucomannan Extract powder can help to regulate body weight.

Furthermore, this supplement is third-party tested and produced in facilities with cGMP standards. That being so, any concerns about the quality and safety of this product are definitely out of the question.


NOW Foods Glucomannan

glucomannan supplements
GLUCOMANNAN CONTENT (mg):

1725

PRICE / AMOUNT:

~ $14 / 180 capsules

DIRECTION TO USE:

Take 3 capsules 1 to 2 times daily with at least 8 oz of water 30-45 minutes before a meal

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Pros

  • Has NPA GMP certification, which audits the standards of various aspects of manufacturing processes
  • Vegan and kosher-friendly 
  • Non-GMO 
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Cons

  • Produced in GMP facilities that may have allergens such as soy, eggs, or fish

These easy-to-swallow capsules are ranked as one of the top 5 glucomannan supplements, with stellar 4.4-star reviews. This product has a high fiber content that helps promote healthy weight management and maintain cholesterol levels within the recommended range. It’s also free of artificial colors or flavors. However, it’s essential to drink enough liquid with this product, as it may cause throat irritation or stomach upset otherwise.


Nature’s Way Glucomannan from Konjac Root

glucomannan supplements
GLUCOMANNAN CONTENT (mg):

1995

PRICE / AMOUNT:

~ $12 / 100 capsules

DIRECTION TO USE:

Take 3 capsules with at least 8 oz. of liquid (full glass) approximately 20 minutes before mealtime

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Pros

  • Vegan 
  • Gluten-free 
  • Dairy-free 
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Cons

  • Each bottle only lasts for a month

These glucomannan capsules are made from natural botanical sources and independently tested to ensure uncompromising standards. This product is also labeled with the TRU-ID® logo for consumers like yourself to find all the used active ingredients that have been third-party tested for purity.

Nature’s Way Glucomannan from Konjac Root claims to promote a feeling of fullness, which in turn reduces appetite and promotes weight loss. However, the effectiveness of glucomannan supplements for weight loss may vary depending on an individual’s usual food intake and lifestyle.


Swanson Glucomannan

glucomannan supplements
GLUCOMANNAN CONTENT (mg):

665

PRICE / AMOUNT:

~ $7 / 90 capsules

DIRECTION TO USE:

Take one capsule with a full glass of water before each meal. For maximum benefit, take up to two capsules before each meal

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Pros

  • Renowned herbal supplement brand since 1969
  • 4.8 stars ratings 
  • Paraben and cruelty-free 
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Cons

  • Contains magnesium stearate filler 

The standout feature of the Swanson Glucomannan supplement is its ease of use—one capsule a day is sufficient for effectiveness. These capsules are also fiber-densing, which helps to support bowel regularity and alleviate constipation. Other than that, this glucomannan supplement could also bring healthy blood sugar level balance by delaying stomach emptying. Although there are no complaints of unpleasant taste, some report having difficulties in swallowing the size of these capsules.

Bottomline 

In summary, glucomannan supplements are a healthy and effective way to support weight and overall management goals. The properties of glucomannan are science-backed; however, more clinical trials need to be conducted to definitively establish its effectiveness. Remember to consult with a healthcare professional before starting any new dietary supplement, especially if you have underlying medical conditions or are taking medications.

FAQs

The choice largely depends on your preferences, as the effectiveness between formulations is comparable. Glucomannan powder is an easy-to-digest and flexible option, as it can be mixed with just about any choice of beverage. 

On the other hand, glucomannan capsules may be more convenient to take on the go as they are pre-measured and don’t leave any aftertaste. However, regardless of the formulation, it is essential to consume glucomannan with plenty of water to avoid glucomannan side effects such as throat irritation or stomach upset. 
Quality and purity: Find a reputable and well-established brand, with trustworthy manufacturing sources. It’s important to have glucomannan supplements with high-quality ingredients. 

Ingredients list: Pay close attention to the presence of any potential allergens, harmful levels of additives, chemical substances, and preservatives. 

Dosage: Make sure the dose per serving size is sufficient to produce effects. You can read reviews from consumers to ascertain the efficiency of a supplementation brand. 

Certifications: Check for third-party testing and GMP facility certification to verify the purity, quality, and safety of any glucomannan product.
Yes. Glucomannan is recognized as a dietary fiber by the US Food and Drug Administration (FDA). It’s safe to be consumed daily in recommended dosages, anywhere from 2-4 grams [5,6]. 
There’s no standard dose of glucomannan for weight loss. However, clinical trials assessing the effectiveness of glucomannan on weight management commonly use 1-2 grams doses with 8oz of water [7, 8]. It’s also worth noting that these trials were held for 2-3 months to allow sufficient time for the supplementation to produce tangible results. 

Disclaimer: This article is only a guide. It does not substitute the advice given by your own healthcare professional. Before making any health-related decision, consult your healthcare professional. We have assembled this article through in-depth research based on the information available at the date of publishing.  We may receive a small commission for purchases you make through our links, but this comes at NO extra cost to you. This commission allows us to continue doing what we love through Health Plugged, which is delivering evidence-based health information to our readers worldwide.

Editorial References And Fact-Checking

  1. Bakht Ramin Shah, et. al,  Health benefits of Konjac Glucomannan with special focus on diabetes. Bioactive Carbohydrates and Dietary Fibre. (2015). Retrieved from https://www.sciencedirect.com/science/article/abs/pii/S2212619815000091 
  2. Center for Food Safety and Applied Nutrition. (2020). FDA Grants Citizen Petition on glucomannan as a dietary fiber. U.S. Food and Drug Administration. https://www.fda.gov/food/cfsan-constituent-updates/fda-grants-citizen-petition-glucomannan-dietary-fiber 
  3. Department of Surgery. (n.d.). Glucomannan. Retrieved from https://froemkelab.med.nyu.edu/surgery/content?ChunkIID=21743
  4. Garrico, M., & Garrico, M. (2023). Is glucomannan safe? (Benefits, side effects, diet uses). Total Shape. https://totalshape.com/supplements/is-glucomannan-safe/
  5. Glucomannan. Glucomannan – an overview | ScienceDirect Topics. (2010). https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/glucomannan#:~:text=Glucomannan%20is%20derived%20from%20the,of%20the%20sugars%20are%20acetylated. 
  6. Konjac Glucomannan. How to access research remotely. (2009). https://www.cabdirect.org/cabdirect/abstract/20123125483 
  7. Shah, B. R., Li, B., Wang, L., Liu, S., Li, Y., Xu, W., Jin, W., & Li, Z. (2015). Health benefits of konjac glucomannan with special focus on diabetes. Bioactive Carbohydrates and Dietary Fibre, 5(2), 179–187. https://doi.org/10.1016/j.bcdf.2015.03.007
  8. Walsh, D. E., Yaghoubian, V., & Behforooz, A. (1984). Effect of glucomannan on obese patients: a clinical study. International journal of obesity, 8(4), 289–293.
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Irshika Suthakar, B.Pharm

Irshika is a Bachelor of Pharmacy (B.Pharm) graduate who enjoys crafting in-depth health and wellness content. Her experience interacting with real-life patients during work has enabled her to pick up valuable communication skills, which translates into well-written and highly-engaging content for her readers. Being a health content writer is what she considers a huge privilege because she loves empowering people to make informed health choices. LinkedIn

Author

  • Irshika is a Bachelor of Pharmacy (B.Pharm) graduate who enjoys crafting in-depth health and wellness content. Her experience interacting with real-life patients during work has enabled her to pick up valuable communication skills, which translates into well-written and highly-engaging content for her readers. Being a health content writer is what she considers a huge privilege because she loves empowering people to make informed health choices. LinkedIn

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Irshika is a Bachelor of Pharmacy (B.Pharm) graduate who enjoys crafting in-depth health and wellness content. Her experience interacting with real-life patients during work has enabled her to pick up valuable communication skills, which translates into well-written and highly-engaging content for her readers. Being a health content writer is what she considers a huge privilege because she loves empowering people to make informed health choices. LinkedIn