Last updated: August 10, 2021

Welcome to our big konjac root test 2022. Here we present all of our tested konjac root products. We have compiled detailed background information and also added a summary of customer reviews on the web.

With this we would like to make your purchase decision easier and help you to find the best konjac root product for you.

You will also find answers to frequently asked questions in our guide. If available, we also offer interesting test videos. Furthermore, you will find some important information on this page, which you should pay attention to, if you want to buy konjac root products.

The most important facts

  • Konjac root was already cultivated in Asia more than 3000 years ago and is used, among other things, for the production of jelly-like desserts or glass noodles.
  • Particularly popular is the substance glucomannans, which is extracted from the tuber of the konjac root. It is often used as a means of losing weight.
  • Konjac root is also used for various purposes. In addition to weight loss, for example, lowering cholesterol or using it as a facial sponge to cleanse the face.

The Best Konjac Root: Our Picks

Guide: Questions you should deal with before buying konjac root

Konjac root is used for several purposes and is also included in a variety of products that promise consumers a wide range of benefits.

Below is the most important information about konjac root so you can get the most accurate picture of it.

What is konjac root?

Konjac root is a root that has been cultivated in Asia for over 3000 years. The root itself contains some substances that are of great importance to the body.

It also contains the notorious active ingredient glucomannans, which is particularly well known as a weight loss agent.

Glucomannans reminds of starch in terms of chemical structure, as their carbohydrates are also highly branched. About 40% of the mass of the root consists of this substance, provided that the root is in a dried state.

In addition, the root also contains glucose, which acts as an energy carrier and can also be absorbed by the body.

Just under five to ten percent of the root consists exclusively of protein. As a purely vegetable source, the root is also an excellent source of protein for vegans and vegetarians.

Other substances that konjac root contains include magnesium, manganese, copper and cobalt.
However, since the majority of the root is indigestible, only the small portion containing the healthy substances can be utilized.
The majority of the rest therefore serves as dietary fiber, so that it fills the digestive tract and absorbs liquid. It also provides a feeling of fullness.
Did you know that konjac root is the tuber of the devil's tongue?
In German-speaking countries, the devil's tongue is also known as the tear tree.

Konjac root for weight loss - is it possible?

The substance glucomannans contained in konjac root is both low in calories and swelling. Shirataki, among other things, are made from precisely this substance.

These are special noodles made from konjac flour and water. The calorie content of Shirataki is extremely low and the taste is neutral.

However, the taste can be changed in numerous directions without much effort. This requires appropriate ingredients such as sauces and spices.

The advantage of these noodles is that, on the one hand, a feeling of fullness is induced, while, on the other hand, only a few calories are consumed.

However, to achieve the optimal effect, a healthy diet in combination with plenty of exercise is necessary. This can also prevent possible depletion of one's own body.

However, attention should be paid to which product it is ultimately. It is not uncommon for these to contain a lower content of glucomannans than stated.

In addition, one should be aware that the key to success lies in eating habits. However, this depends on the individual, so the substance is not a long-term option.

What are the health benefits of konjac root?

In addition to possible weight loss, konjac root has a number of other benefits. For example, it regulates digestion and strengthens the intestinal flora.

The reason for this is the support of the necessary bacteria formation and activity in the gastrointestinal tract.

In addition, the root has a positive effect on insulin levels and fat metabolism. In medical circles, it is also proven that konjac root provides a balancing effect of cholesterol levels.
The effect on diseases such as lung cancer and skin diseases is not yet known, but animal studies have shown that it reduces the formation of cancer cells in the lungs and accelerates the healing of itchy skin.

What are the known side effects of konjac root?

When taking konjac root, it has previously been noted that some people have suffered from stomach upset. In addition, there have been reports of irritable cough.

Nevertheless, the side effects are rather limited. In Germany, the root is therefore also considered a food supplement, so it does not require a prescription.

Other possible complaints are constipation and flatulence.

Nevertheless, attention should be paid to which medications are used. These could be negatively affected by taking konjac roots. Especially in the case of diabetes or cholesterol problems, consultation with a doctor is advisable

What should be considered when taking konjac roots?

When taking konjac root powder, for example, care should be taken to ensure that it is accompanied by sufficient water. Without the intake of water, there is a possibility that digestive disorders may occur.

The reason for this is the fact that the intestinal tract requires large amounts of water or other liquid to optimally process the corresponding food, as well as the konjac root.

Wasser wird aus Flasche in ein Glas geschüttet

Bei der Einnahme von Konjakwurzel solltest du darauf achten, ausreichend Wasser zu trinken. (Bild: / congerdesgin)

Another reason is the special property of konjac root to bind large amounts of water. With too little water, there is a risk of constipation. In extreme cases, this can even lead to intestinal obstruction.

If the goal is, for example, effective weight reduction, it is advisable to consume a particularly low-calorie liquid. Water is still the best solution, since the calorie content is practically non-existent.

Since konjac root also consists of large amounts of dietary fiber, a sufficient intake of liquid becomes even more important.

As is common with all dietary fiber, it also binds relatively large amounts of liquid. Therefore, the probability of constipation is particularly high when taking konjac root products without liquid. This type of constipation is consequently called konjac root constipation.

However, as long as enough liquid is consumed when taking the product, no such problems should occur.

How much does konjac root cost?

The table below shows the prices of products containing konjac root. These vary depending on the quantity, type and dosage form.

Type price
Capsules from €15
Powder from €12

Prices can vary from €9 to around €30.

Decision: What types of konjac roots are there and which one is right for you

Basically, you can distinguish between four different types / types of konjac roots:

  • Capsules
  • Powder
  • Rice
  • Noodles

What are konjac root capsules and what are the advantages and disadvantages of konjac root capsules?

Konjac root capsules are extremely fine konjac root powder inside the capsule shell.

The capsule shell is made of gelatin, so as a vegetarian or vegan, it should be clarified in advance whether this is of purely vegetable origin or not.

It is taken orally and requires a liquid to accompany it during ingestion.

  • Neutral taste
  • Fast intake
  • Individual dosage possible to a limited extent

What is konjac root powder and what are the advantages and disadvantages of konjac root powder?

The powder form is the most natural of all forms. The powder can also be used as flour, which is why it is also known as konjac flour.

It can be used for baking, for example. In addition, it is possible to consume the powder in combination with a liquid.

  • Versatile use
  • Most natural of all types
  • Individual dosage possible
  • Unsuitable for on the go

What is konjac root rice and what are the advantages and disadvantages of konjac root rice?

Konjac root rice is made with the help of konjac flour. The rice has an extremely low calorie content, so it is excellent for weight loss.

However, the price is quite high compared to conventional rice.

  • Very low calorie content
  • Can be used like other types of rice
  • Very high price

What is konjac root noodles and what are the advantages and disadvantages of konjac root noodles?

Konjac root noodles, like the rice variety, are also made from konjac flour and therefore have a correspondingly low calorie content. Like other types of noodles, konjac roots are suitable for a variety of dishes.

  • Extremely low calorie content
  • konjac root noodles lend themselves to many dishes
  • Very high price

Konjac root rice can be used to prepare many delicious and extremely low-calorie dishes.


Aus Konjakwurzel Reis lassen sich viele leckere und äußerst kalorienarme Gerichte zubereiten. (Bild: / takedahrs)

Buying criteria: You can compare and evaluate konjac roots based on these factors.

In summary, these are:

  • Dosage
  • Intended use

In the following, we would like to show you which factors you can use to compare and evaluate konjac roots. This will make it easier for you to decide whether a particular konjac root is suitable for you or not.


The dosage provides information about the strength of the effect in relation to the amount taken.

Since konjac root contains a number of natural substances in addition to its function as a dietary fiber, the rule was; the higher the dose, the better. This is especially true for capsules.

In the case of powder, there is also the possibility of adjusting the dosage individually. The same also applies to the noodle and rice variants.

However, attention should also be paid to a reliable source, or a reliable supplier. It is not uncommon for products to be offered that state a higher dose than is actually present.

Intended use

Depending on what you want to use konjac root for, the above-mentioned variants are suitable. For baking enthusiasts, for example, konjac root powder is a good choice.

Furthermore, the advantages between konjac root in powder and capsule form are compared and should support you in your decision:

Type advantage
Capsules tasteless, uncomplicated handling
Powder mixable with drinks and flour, suitable as an ingredient


The powder can be mixed with any flour in the desired quantity and then used. In addition, the powder can also be added to a drink and then drunk.

Capsules, on the other hand, have the advantage that they are tasteless and can be taken orally quickly and easily with the help of a liquid.

For noodle or rice dishes, konjac root rice and noodles are a good choice.


Konjac root capsules are suitable as a food supplement and are available without prescription. (Image: / ranys)

Facts worth knowing about konjac root

Konjac root has been considered a proven remedy for better health in Asian circles for thousands of years. It is only in the last few decades that more and more scientists in western countries have become interested in the notorious root.

Below you will find more information about konjac root that will surely interest you.

Konjac root - What do studies say about weight loss?

Healthy adults were tested in a clinical study. These were volunteers between the ages of 21 and 54. They were given konjac root products over a period of three weeks. The daily intake of glucomannan ranged from 1.5 g, 3 g and 4.5 g.

Stool samples were taken to check whether the stool situation had improved and whether there was an increase in faecal lactobacillus as well as bifidobacteria.

It was found that there was an increased concentration, which means a positive effect on digestive processes.

The European Food Safety Authority (EFSA) recommends about 3 g of konjac powder as a daily basis for successful weight loss.

According to a Norwegian study, weight loss through the intake of konjac powder is 0.35 kg higher than in the case of a diet or corresponding nutrition.

This means that a weight loss of 3.5 kg is possible within two and a half months. In addition, a diet should be adhered to, in which the daily calorie budget should be just under 1200 kcal.

Due to the high effectiveness of the root, the European Food Safety Authority (EFSA) has allowed the corresponding products to bear the following label:

"Reduction of body weight when at least 3 g of konjac glucomannans are taken daily in 3 portions of at least 1 g each with 1 to 2 glasses of water each before a meal by an overweight person"

What does medicine say about glucomannan?

Glucomannan is also known as konjac mannan "voodoo lily" or "devil's tongue". It is a water-soluble dietary fibre which, as already mentioned, is extracted from the konjac root.

In Asia, the substance has been used in cooking as a kind of thickener for almost 1500 years.

Interestingly, even the food industry became interested in it. Glucomannan has been used for several years to thicken and gel food. It is also used to make glass noodles and biscuits.

Furthermore, it was found that high viscosity glucomannan in biscuits with a dosage of 700 mg improves the three main risk factors for CHD (coronary heart disease) and metabolic control.

In addition, the American Society for Clinical Nutrition study found that both blood sugar could be improved. Incidentally, the same applies to other risk factors for CHD in type 2 diabetes.

The following information on the effect of glucomannan was published by the European Food Safety Authority (EFSA) under the Health Claims Regulation 2010:

"Reduction of body weight when taken at least 3 g daily in 3 portions of at least 1 g each with 1-2 glasses of water each before a meal by an overweight person."

Did you know that Shirataki noodles are also called "Miracle Noodles" in America?

They owe their name to the low number of calories.

Another special feature of glucomannan is its ability to bind up to 17 times its own volume of water.

This means that the ingested food swells more quickly and the feeling of satiety lasts correspondingly long. In addition, a healthy intestinal cleansing is the result. Experts like the Austrian intestinal specialist Franz Xaver Mayr see intestinal cleansing as an important measure for a healthy life.

What konjac root recipes are there?

Konjac root can be used for numerous recipes. As already mentioned, especially konjac root rice and konjac root noodles are well-known.

These can be used to prepare a variety of dishes. Konjac flour can also be used for baking.

Strawberry Chocolate Smoothie

The following ingredients are needed for the recipe:

  • 400 grams of rice made from konjac flour
  • 100 ml milk
  • 30 grams of strawberries
  • A few mint leaves
  • 200 grams of chocolate

First, the rice should be washed under cold water. Then it must be allowed to drain.

The chocolate must now be warmed and then placed in a small pot. Now the (warmed) milk is poured on top.

The chocolate mixture is then put into a blender together with the strawberries and rice and finely pureed.

The smoothie can then be drunk, but should be allowed to cool too much.

Konjac Root Pasta with Avocado and Ricotta

The following ingredients are needed for the dish:

  • 2 avocados
  • A pack of ricotta cream cheese
  • 400 grams konjac root noodles
  • Parsley
  • Grated parmesan cheese
  • Salt and pepper
  • ½ cup cream

The pasta can be safely processed according to the instructions on the packet. It is important that they are washed under cold water in a sieve.

Then mix the ricotta cheese with the avocado, which must first be mashed with a fork.

Then the cream is added, while salt and pepper round off the profile.

The parsley must be chopped and then mixed into the mixture.

Then mix the mixture with the pasta.

The dish should then be left to stand for two hours. Finally, the parmesan can be sprinkled on top, if desired.

Image source: / Free-Photos