Black Radish Extract: Benefits, Side Effects & Dosage

What is Black Radish Extract?

Black radish extract comes from the root of the black radish plant. The black radish, or the Black Spanish radish, is a member of the Cruciferae family and has been in use for centuries, both as a medicine and as food. It is scientifically known as Raphanus sativus L. Var. niger and may have originated from the eastern Mediterranean region. It is referred to as the black radish due to its dark purple or sometimes dark exterior, though it does come with a white inner flesh.

Since ancient times, black radish has been used by the Chinese, Indians and Europeans to treat different illnesses. Other regions have started growing the black radish, and its popularity has increased in recent years as a result of its impressive nutritional profile and fantastic health benefits.

The black radish is slightly larger than the traditional radish and more bitter and pungent in flavor. This is as a result of the chemical compounds such as glucosinate, Isothiocycinate and myrosinase produced by the plant. Its not-so-appetizing flavor is offset by the tons of health benefits it provides. The black radish has earned the moniker ‘the black magic’ due to its antibacterial and antimicrobial content, as well as being a powerhouse of nutrients and antioxidants. Today, the black radish is mostly used to make herbal supplements.

Nutritional Information of Black Radish Extract

Black radish extract offers various health benefits thanks to the wide array of compounds present within. Those compounds are:



Dietary fiber








Vitamin A


Vitamin C

There are also low levels of anthocyanins, antioxidants, hormones and enzymes within the black radish.

Black Radish Extract Benefits

Improves Skin Health

zinccalciumvitamin Kvitamin C


A common skin problem that can be cured by the consumption of black radish extract is angular cheilitis. Angular cheilitis is characterized by red, inflamed lesions at the side of the lips, and it is caused by bacterial or fungal infection, skin dryness or lack of essential body nutrients.

Boosts Liver Function

Our liver processes everything we eat and drink. It is a vital organ of the body with several functions which include protein production, bile secretion, drug metabolism and chemical detoxification. However, for several reasons, the liver may get damaged. For example, if you consume too much alcohol or you take drugs often, your liver could face the brunt. If the detoxifying power of the liver reduces, it could lead to a host of health conditions.

vitamin B1magnesiumcalcium

A study in the Journal of Agricultural and Food Chemistry revealed that an extract derived from the black radish plant effectively induced detoxification enzymes in a tested liver.


Acts as Respiratory Tonic

whooping coughcold and flu

Can Treat Hyperthyroidism

Hyperthyroidism (also called Grave’s Disease) is a condition where thyroid organs secrete excess thyroid hormones. You have to treat this disease promptly, as it may cause health problems such as metabolism disorder, especially in women.


Maintains Cholesterol Levels


heart attack

The Journal of Biomedicine and Biotechnology published a study that sought to determine the effects of juice squeezed from black radish on serum lipids and cholesterol gallstones on mice fed on a lithogenic diet. After undergoing treatment with black radish for six days, the study showed the mice had decreased cholesterol gallstones, as well as a reduced level of cholesterol and triglycerides. The study concluded black radish could be effective in treating cholesterol gallstones and reducing blood lipids.

Black radish extract can also help in treating gallstones caused by cholesterol. Black radish juice extract contains antioxidants that help manage lipid metabolism and can help cut down on the risk of hyperlipidemia.


Black radish extract contains isothiocyanates, which has an important effect on the genetics pathways of cancerous cells and can lead to cell death, thereby preventing cancerous cells from reproducing.


Supplements are also a great source of glucosinolates, a naturally occurring compound in cruciferous vegetables, which are broken down by our body into chemicals that can help prevent cancer. Black radish extract also has sulforaphane and anthocyanins, powerful compounds that have been beneficial in combating cancer of the mouth, prostate, stomach and kidney. Moreover, they can help neutralize free radicals and decrease oxidative stress, hence reducing cancer risk. However, further research is still necessary to understand the extent to which black radish can help.


If synthetically filled detoxifiers has been your go-to, then it is time to try out a more natural alternative, as black radish extract can help remove toxins found in the bloodstream and bone marrow.

The presence of toxins in the body can hinder the normal functioning of our red blood cells and other body organs. If you’re unable to purify the toxic blood in your system, it can destroy the friendly gut bacteria, impair RBC function and affect the proper functioning of your organs.

A 2012 study on mice revealed that black radish helped increase the activity of detoxification enzymes and also cleansed the blood of toxic materials. Black radish works alongside the lymphatic system and the liver to boost the activity of detoxification enzymes. Also, its high content of glucosinolate may be a detoxification enhancer.

Fortifies Immune System

sore throat

Improves Digestion


Since black radish supplements improve the functioning of the liver and gallbladder, it also helps to improve digestion. How does this occur?

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Well, the liver and gallbladder both play a role in digestion. The liver is responsible for bile production and the gallbladder stores bile and increases its potency. When you eat fatty food, the gallbladder releases this bitter fluid to improve the digestion of fat and protein. As a result, the use of black radish can serve as a natural remedy for an impaired digestive system.

Black radish contains a good amount of dietary fiber which helps to reduce constipation and maintain healthy bowel movement. In fact, black radish juice has been used in folk medicine to enhance the activity of digestive juices like bile, hereby improving digestion. Also, black radish being a detoxification agent clears toxic material from the stomach, which will then help maintain the PH level of the stomach.

Improves Cognitive Health


content, which are vital minerals for balancing electrolytes in the brain.



Black Radish Side Effects

As great as black radish extract is as a natural remedy for various conditions, some radish side effects may occur from its consumption. Here are some of them:

Anti-thyroid or Goitrogenic

All members of the cabbage family (black radish inclusive) can cause goiter because of their glucosinolate content. Goiter as a radish side effect occurs when the thyroid glands become enlarged as a result of iodine deficiency. When excess glucosinolate is consumed, it could disrupt the production and secretion of essential thyroid hormones. In the absence of these hormones, our body’s ability to burn and use energy is at risk.


Though black radish can fight off cancer, excess consumption can actually lead to cancer. When nitrite (a by-product of glucosinolate) is combined with amine forming N-nitroso compound, it could result in cancer. Furthermore, nitrates react with hemoglobin to form methemoglobin. A high blood level of methemoglobin can lead to cyanosis, which may cause bluish lips, cheeks and nails.


Black Radish Dosage

As a dietary supplement, take 1000 mg grams (heavy 1/3 tsp) daily, or as directed by a physician.

Why Take Black Radish Extract?

Black radish extract

Apart from our respiratory health, the various nutritious properties contained in the black radish extract are quite beneficial in alleviating many health issues. You can enjoy these health benefits of radish in the long run when you make the black radish supplements a part of your regimen.

The Bottom Line

The black radish extract isn’t getting as much attention as it deserves as a natural remedy for various health conditions. If you’re looking for a natural remedy that can boost your health, then the black radish supplement may be right for you. It offers an array of health benefits, from improving skin health and boosting the function of the liver to helping with cold and cough. It is also said to be an anti-cancerous and detoxification agent while having the ability to treat hyperthyroidism and aid weight loss.

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