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Glucomannan Konjac Root Review – 8 Reasons To Consider

By Sasha de Beausset Aparicio, MSc

Reviewed by Rebecca Williams, MD, MA, MB, BChir

Last Updated:

Evidence Based | Facts | What's Inside? | Pros & Cons | Warnings | Price | Dosing | Bottom Line

Glucomannan Konjac Root is a premium dietary herbal supplement manufactured by Nature’s Way and can be successfully used in weight loss programs.

Nature’s Way, a leader on the herbal remedies market, was founded in United States, Utah, in 1969. Ever since, it has gained its reputable and trusted name, their priority being maximum satisfaction of their customers. They develop quality herbal supplements and they continuously receive positive feedback from all over the world users.

Glucomannan is a dietary fiber derived from the root of Konjac plant. It was grown primarily in Asia, but also in Japan, China, Taiwan and Korea. It is found in many supplements for weight loss under tablet or powder forms, but also in some types of noodles. It has a lot of health benefits, such as lowering high blood pressure and cholesterol levels. It is also considered a fiber-based remedy for treating constipation. It has also been shown to control blood sugar levels and promote weight loss, by making you eat less and feel fuller.

Glucomannan Konjac Root has received a lot of positive feedback from users worldwide, being recommended for people with high cholesterol levels, hypertension, diabetes, obesity, constipation, and other digestion imbalances.


1) Glucomannan Konjac Root Quick Facts

Glucomannan Konjac Root is an herbal remedy presented as a bottle with 100 capsules, each containing 1.99 g Konjac root and 2 g of dietary fiber. The manufacturer recommends 3 capsules daily taken with 20 minutes before mealtime. It is suggested that the capsules should be taken with a full glass of water, because otherwise you may risk choking. Also you should be extremely careful if you have difficulty swallowing.

Glucomannan is a straight-chain polymer that is considered a dietary fiber. It is the root of Konjac plant and also a water-soluble polysaccharide. There are a few studies regarding health potential benefits, but they are not yet approved by the U.S. Food and Drug Administration. For instance, many nutritional supplements containing Glucomannan are mainly advertised as being a supporting treatment for obesity, high cholesterol, high blood pressure, and diabetes. It also helps managing constipation and other digestion problems.

There are some common side effects of this plant. You might experience nausea, gas, diarrhea, stomach pain, or bloating. But there are some dangerous risks also; it may interfere with blood sugar levels, so diabetics should avoid using it unless there is medical observation involved. Also, the tablets may cause gastrointestinal obstruction and blockages of the intestines or throat.

What’s Inside?

2) What’s Inside Glucomannan Konjac Root?

Glucomannan Konjac Root contains the following ingredients: Glucomannan Konjac root, dietary fiber, plant-derived capsule, and magnesium stearate.

3) Is Glucomannan Konjac Root Right for You?

Glucomannan Konjac Root is an herbal supplement mainly marketed as a successful aid in weight loss diets. It helps induce weight loss even for overweight people.

The main ingredient is Glucomannan that may be used to treat obesity, constipation and diabetes. Diabetes happens when your pancreas hormone called insulin is unable to move the glucose from bloodstream to cells. Some studies claim that subjects with type-2 diabetes who took this root improved their overall blood glucose control, being able to reduce their insulin dose.

There are some clinical trials regarding the impact of the Konjac Root on fasting blood sugar and plasma lipids. They reported that LDL cholesterol decreased without affecting HDL levels and also that body weight and triglycerides have been significantly reduced.

Some Chinese studies on mice claim that the root powder may help prevent the development of lung tumors.

There are a few serious side effects that you should consider before starting the administration. Diabetics should consult a healthcare specialist for a careful monitor of their blood sugar levels during the treatment. Also, people who are having difficulties breathing and swallowing, are experiencing allergic reactions or are chocking should consult a doctor. Other common side effects are diarrhea, nausea, bloating, gas, and stomach pain.

There are online testimonials about Glucomannan Konjac Root. What it has been reported includes the following:

  • the product has been banned in some countries because of the high risk of chocking

  • it can help you lose body fat

  • It really controls your appetite so your eat much less than normal

  • it may decrease LDL cholesterol levels

  • it removes constipation

Pros & Cons

4) Glucomannan Konjac Root: Pros and Cons

  • The product is a good remedy for constipation and also on weight loss programs.
  • It is an affordable supplement, easy to buy online and from pharmacies.
  • It has a wide range of benefits and many studies related to the main ingredient.


5) Glucomannan Konjac Root Product Warnings

  • There are no free trials available and no testimonials on the official website.
  • It is not recommended if you have difficulty swallowing or breathing.
  • Diabetics should avoid using this supplement, unless they are strictly supervised by their doctor.


6) Glucomannan Konjac Root Price

One bottle contains 100 Capsules and the manufacturer recommends an intake of 3 tablets daily taken with 20 minutes before meals with a big full glass of water. This makes Glucomannan Konjac Root an affordable supplement, one bottle covering one month treatment. More, the shipping costs are low and there are many good deals online.

The manufacturer doesn’t provide a free trial offer by default and there are no testimonials about the product available on the official website. Also, they do not provide the possibility of purchasing the product online, but they are offering directions regarding U.S. pharmacies where the product can be bought.


7) Glucomannan Konjac Root Serving Size

It is advisable to take Glucomannan Konjac Root under medical supervision in order to avoid developing other complications.

Bottom Line

8) Our Bottom Line

Glucomannan Konjac Root is an efficient herbal formula manufactured by Nature’s Way, used mainly for supporting weight loss programs.

According to many clinical studies and testimonials available online, the product is considered a healthy formula that can be successfully used to keep your cholesterol and blood sugar levels within normal values. Other studies claim that Glucomannan Konjac Root is a good source of fibers for a healthy diet, treating constipation and certain digestive disorders. It is also said that it can treat acne.

Unfortunately, there is no clinical evidence that can attest all these claims and also the benefits of this product may not apply to the majority of people.

3/5 - (1 vote)
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I heard about Glucomannan Konjac Root from Doctor Oz Show. I have decided to give it a try and I have bought it online at a good deal. I am very happy that I have lost a few pounds in only 2 weeks. It helps me being more motivated having a healthy diet and avoiding a sedentary lifestyle.