What is Chaga (Chaga mushroom)? About active ingredients, effects and effects contained

Table of contents

Russian birch story

Russian birch story

Birch trees are also known as mother trees or nursing trees. Since a long time ago Russians has a practice of drinking birch sap for health and beauty. The birch sap is rich in saponins, polyphenols, polysaccharides, and minerals. All of these combined has an excellent detoxifying effect, diuretic effect, constipation improvement, stomach and intestinal action, and also for rheumatism, gout, and stress. They are expected to be effective. In addition, the sap of white birch trees has a high anti-oxidative effect, it is also used in cosmetics as it has an effect of softening the keratin, has an excellent moisturizing effect, and is rich in ingredients that prevent dryness due to aging and keep the skin young.Chaga, which is planted on such a birch tree and absorbs the nutritional components of the birch tree for 10 to 20 years to grow, is truly a treasury of nutrition.

Diamond Chaga in the Russian Forest

Diamond Chaga in the Russian Forest

The birch tree, also called the mother tree (nursing tree), is one of only 20,000 birch trees, and it is very precious. It is called the forest diamond. The Chaga used for RETHÉ is 100% Russian and uses only what has matured for 15 to 20 years. Chaga is a diamond of the forest, which is a condensed forest of nutrients contained in the sap of birch grown in the Russian forest .

Surprise!! Chaga that does not freeze even in a -60ºC freezer

Surprise!! Chaga that does not freeze even in a -60ºC freezer

frozen chaga frozen chaga

The Chaga has been put into a -60ºC freezer once it had been boiled. The dark amber liquid you can see in the center of the ice (in the second image) is the extract of Chaga. Once the Chaga has been boiled, it has been put into the freezer. The water contained in the Chaga will freeze leaving the dense extract of Chaga in a liquid form. The Russian Chaga lives in an extremely cold area which is called permafrost. The reason why Chaga never freezes is because it is parasitized onto birch trees, extracting the sap out of them and the birch tree sap never freezes. Chaga, which grows by absorbing the sap, is rich in components such as SOD enzyme, polyphenol and β-D-glucan. Therefore, extract of Chaga remains as a liquid even when placed in a freezer.

Name of Chaga

Name of Chaga (This article was originally written in Japanese and the content is not appropriate for this language.)

If you look up chaga, it's often described by various names. Chaga, birch mushroom, chaga, chaga mushroom, Siberian reishi, etc. There is no right way to say which one is correct, but chaga or hippopotamus is the most commonly used and established one.


Chaga is the most common name for it. It is also registered in Wikipedia as "Chaga". The name "Chaga" is actually a registered trademark of Chihaya Corporation, which has the right to use the name since 1998. We have a business relationship with Chihaya Corporation and have permission to use their trademark. The general name of Chaga is "Kabanoanatake".


It seems to be just a shortened version of the word chaga, but it is the origin of the word chaga. Chaga is the Russian expression for chaga. It is pronounced as "чаге" in the Russian alphabet. It is pronounced as "Chagya" in Russian.

Chaga mushroom

The proper name of Chaga is Kabanoanatake, which is the official Japanese name for it. Kabanoanatake is written as "birch mushroom" in the Chinese character. The Chinese character for "Kabanoanatake" is written as "mushroom" that grows in the hole of a white birch (white birch). It is named Inonotus obliquus in the scientific name. It is called "Inonotus obliquus" in the scientific name.

Chaga mushroom

In English-speaking countries, they are often described as Chaga Mushrooms.

Siberian Ganoderma lucidum

This is another expression for chaga. It means a Siberian reishi mushroom (a member of the Sarcococcaceae family of mushrooms).

Benefits of Chaga

Benefits of Chaga

Chaga is a mushroom from the birch tree and we mainly take it as a tea. Chaga is only a food, so it does not have the benefit of curing diseases or curing the body. It is a medicine or herbal medicine or a doctor's work. Please understand that although some of the people selling chaga are describing it as if it is effective for certain diseases or describing their experiences, it is not effective in treating diseases. We only market Chaga as a wonderful, nutritious tea.

Chaga contains many active ingredients. These ingredients are said to have beneficial effects on the body.

Studies have shown that each active ingredient itself has antioxidant effects, stimulates the immune system, prevents viral infections, normalizes liver function, and so on. This does not mean that these effects directly treat the illnesses of those who drink Chaga. Even if it is true that chaga contains ingredients that are known to be beneficial to the body, they do not have a curative effect.

"Eating fatty foods makes you fat. Eat sugar and you'll get tooth decay. We all know this, but we also all know that it doesn't always happen. Eating fatty foods doesn't make you fat, as long as you have proper eating and exercise habits. You can eat sugar and still keep your teeth healthy if you brush and take care of them properly. In the same way, taking certain active ingredients does not necessarily cure diseases. It has to do with lifestyle, diet, exercise and many other factors.

Drinking chaga tea is a great way to improve your health, and we are proud to recommend it to you. For some, it may help some people. However, we hope you can enjoy this wonderful tea with the understanding that its active ingredients do not cure any disease.

The active ingredients in chaga

Superoxide dismutase (SOD)

A major feature of Chaga is that it contains a lot of SOD enzymes. SOD enzyme is an enzyme that eliminates active oxygen generated in the body and makes it harmless. Active oxygen causes the body to rust, causing illness and aging. By detoxifying the active oxygen generated every day, you can keep your health and beauty away from diseases.


β-D-glucan is known to having a role in activating the immune system and keeping the body healthy. Recent research has shown that regularly ingesting β-D-glucan strengthen the immune function. It has been proved that those who have ingested β-D-glucan for 3 years have 5 to 7 times stronger of an immune system compared to those who have not ingested.


Lignin has been confirmed that it has the effect of preventing virus infection. The mechanism by which various viruses infect humans is that they emit enzymes that dissolve the cell membrane. Lignin has been shown to absorb enzymes produced by the virus to prevent infection.


Saponin has the effects of normalizing liver function, lowering cholesterol, clearing blood vessels, and preventing obesity. In addition, it has various effects such as enhancing immunity, and is ideal for preventing lifestyle-related diseases.

Betulinic acid

It is a triterpene that is abundant in the birch sap. It has the function of inhibiting cholesterol and fatty acid synthesis, improving insulin sensitivity, and improving obesity caused by over-eating. Betulinic acid has a function of inhibiting angiogenesis of cancer cells, and has a function of causing apoptosis in cancer cells of specific species. Research on anticancer drugs and antiviral drugs is being conducted using betulinic acid.

Chaga tea

Chaga tea

Chaga is a mushroom that grows on white birch trees, so it can be harvested not only in Russia, but also in areas where white birch trees grow, so it has been used in many parts of the world. It is said that since chaga was collected in Hokkaido in Japan, it was customary for the Ainu people to drink it as a tea. Unfortunately, due to overfishing and global warming in recent years, it seems that not much of the chaga can be harvested in Japan anymore. There are also records that ancient Greeks and American natives used to use chaga tea.

The Truth About Chaga tea

Traditionally, chaga has been used in tea form as chaga tea, and the nutritional content of chaga has had a positive effect on health care. There is actually a bit of a disappointing truth here. Chaga is a mushroom, so it is not very suitable for human consumption and absorption. The reason is that not only chaga but also mushrooms have very hard cell walls. This cannot be fully broken down by human digestive juices and digestive enzymes, so most of the nutrients are not absorbed by the body and are excreted. It's the same if you make a tea and boil it thoroughly in hot water. Of course, the cell walls are broken down to some extent and the nutrients are dissolved as tea, but most of them are wasted.

So what should we do?

The power of RETHÉ

Our solution is to break down the cell walls in advance. The difference between RETHÉ and ordinary chaga tea is that RETHÉ is made from chaga that has undergone a process of cell wall destruction. That's why RETHÉ is a very good chaga tea. It's not just a cute package, but it's also a real powerhouse.

And the production method of this cell wall-breaking is based on a process patent officially approved by the Patent Office through a technical partnership. So you can enjoy a unique and special churgatee like no other.

Which form of chaga is better, powder, broken powder or extract?

Chaga is sold in a variety of forms: dried and natural in its original form as a mushroom, chopped, powdered, or as an extract. Each has its own characteristics.

Chaga original/chopped

Chaga original/chopped

This is a natural looking chaga before processing, which is on the right side of the picture. The chaga is processed into various states. The one on the plate in the center of the picture is the chaga that has been chopped up. If it is in this state, you can put it in a tea pack and boil it in a kettle and drink it as a tea.

Chaga extract

The extract powder is in a fine powder form. It is a slightly coarser powder than matcha. It is very concentrated and rich in beta-glucan and SOD enzymes.

crushed powder and destroyed powder

crushed powder/destroyed powder

As described in the Top Page, there are two types of products: one in which the cell walls are destroyed and made into a powder, and the other in which the cell walls are crushed and made into a powder.

RETHÉ is an original blend of chaga tea

RETHÉ is a unique blend of chopped, cell wall destroying and extracts to bring out the best in each ingredient. In addition to the basic ingredients of Chaga tea, this original blend of Chaga has a good combination of nutrients trapped in the cell walls and high SOD enzymes that can be used in the extracts. And because Chaga's cell wall destroying powder uses a process patent, it is a special product that is impossible for other companies to imitate, even if they try to imitate it.

Chaga Extract

(This article was originally written in Japanese and the content is not appropriate for this language.)

The ingredients in RETHÉ include something called "Chaga Extract Powder". By extract, you mean a thick liquid? Powder? What's it like? This is the answer to the question.

Ex is short for extract

First of all, the word extract stands for extract. It is a concentrated version of something that has been extracted with water or ethanol. Since it is concentrated, the ingredients are very thick.

Chaga extract powder used in RETHÉ

What we use in RETHÉ is chaga extract powder. The active ingredients are extracted from the nucleus of the mycorrhizal fungus of the chaga, which is then spray-dried and processed into an extract. The mycorrhiza is a mass of the tertiary mycelium, which is formed separately from the fruit body and stores nutrients.... It's difficult to understand. Let's rephrase it in a simpler way.

The fruit body is the so-called mushroom-shaped part. If you can imagine a shiitake or a shimeji mushroom as an eating place, it is the fruit body. And the nucleus is the hard part on the right side of this picture.

Chaga sclerotium

To put it simply, it is a mushroom, but not the mushroom-shaped part, the hard part where nutrients are stored is the mycorrhiza. At RETHÉ, we have mixed the active ingredients from the nucleus of the fungus in hot water and dried them to make a powder of chaga extract, which allows you to absorb all the nutrients of the chaga.

Books about Chaga

Books about Chaga Here are some books about chaga in Japan.

Bioactivity of chaga

Bioactivity of Chaga
-Effects on cancer and diabetes and prevention of side effects of anti-cancer drugs and radiation therapy

  • Author: Kaz Guzu, Graduate School of Medical Sciences, Suzuka University of Medical Sciences
  • ISBN:4903329003
  • First published: 25 November 2005
All about Chaga

Phantom Natural Medicinal Mushroom: The Whole Story of Chaga A Glimpse of How to Overcome Cancer Cells!

  • Author: Dr. Masahiro Wada (Supervisor), Professor, Faculty of Pharmaceutical Sciences, Josai University Chaga Research Institute
  • ISBN:9784894920750
  • First published: 25 November 2004
Ultra-immunotherapy is a real, phantom cancer-killing mushroom, Chaga

Ultra-immunotherapy is a real, phantom cancer-killing mushroom, Chaga

  • Author: Doctor of Agriculture, Makoto Yoneyama, United Nations APO Specialist
  • ISBN:492119209X
  • First published: 15 April 2002
Healthy Tea The Appeal of Kabanoanatake

Attracts Much Attention for its Immune Power Activation

  • Author: Tetsuo Ogawa, M.D. (Supervisor)
  • ISBN:4879320358
  • First published: 1 October 2003
Cancer's Immune Revolution

Cancer's Immune Revolution All about the Phantom Mushroom Chaga

  • Author: Isao Horiuchi, Ph.D. (Supervisor), Russian Chaga Research Group, My Institute for Microbiology (Editor)
  • ISBN:9784921192198
  • First published: January 2004
Why do Russians cure cancer with 'chaga'?

Why do Russians cure cancer with chaga

The super anti-cancer properties of birch mushrooms

  • Author: Makoto Yoneyama (Supervisor)
  • ISBN:9784883581580
  • First published: May 2002
How to cure cancer with the latest immunotherapy 'chaga'

How to cure cancer with the latest immunotherapy "Chaga"

testimonies of 56 people who have experienced "cancer getting better".
  • Author: Doctor of Medicine, Professor Emeritus of Tokai University, Supervised by Koji Shioka
  • ISBN:489795066X
  • First published October 17, 2003
Get healthy with chaga

Healthy with Chaga

  • Author: Yamaguchi Clinic Director by Taketuo Yamaguchi, MD
  • First published: March 2009
Overcoming Cancer

Cancer Fighting Chaga Chaga Mushroom Approved for Medicinal Use in Russia

  • Author: Yoshiki Yamada, M.D., Director of the Jikei Clinic
  • First published: January 2001
Kabanoanatake (Chaga)

Cabanoanatake (Chaga) mushroom

  • Author: Former Deputy Director of Osaka Red Cross Hospital by Tomoaki Hoshizaki, MD PhD
Phantom Mushroom Kabanoanatake

Phantom Mushroom: Hippocampus borealis

  • Author: Mitsuo Koda, MD
  • First published: January 2004