Black Mustard – What It Is, How It Works and Side Effects!

Black mustard is a plant, the seed and seed oil are used to make medicine for the common cold, painful joints and muscles. Like rheumatism and arthritis .

Black mustard seed  is used to cause vomiting, relieving water retention ( edema ), increasing urine output, and increasing appetite.

Some people make a paste by mixing ground seeds with warm water. They wrap the paste in cloth and apply the cloth directly to the skin as a “mustard plaster”.

This preparation is used to treat pneumonia , pain and swelling (inflammation) of the lining of the lungs ( pleurisy ), arthritis , lower back pain (lumbago), and sore feet.

In food, black mustard leaves  (greens) are used in salads and many other dishes.

Also in food, this type of mustard is used as a spice and mustard condiment. There are approximately 40 different species of mustard. Three different types are used to make mustard condiment.

White mustard (Brassica alba) is the mildest and is used to make traditional American yellow mustard . Brown mustard (Brassica juncea) is dark yellow, has a tangy flavor and is used to make Dijon mustard.

It is easier to harvest brown mustard seed than seed, so many mustard condiments now contain brown mustard seeds instead of seeds.

How black mustard works : 

There is not enough information available on how it might work for medical issues. Black mustard  contains chemicals that may initially reduce pain when applied to the skin. But contact with the skin for a long time can cause skin irritation and burning.

However, evidence was found that this mustard can help in the treatment of the following diseases:

  • Common cold ;
  • Painful joints and muscles (rheumatism);
  • Arthritis;
  • Water retention (edema);
  • loss of appetite;
  • vomiting;
  • Pneumonia painful lung problems when applied to the area;
  • Sore feet;
  • Low back pain ;
  • Other problems.

However, as there are not many scientific studies that prove the effectiveness of this plant for the health problems mentioned above, more evidence is needed to evaluate the effectiveness of black mustard  for these uses.

Black mustard side effects :

It is probably safe when consumed as part of a food such as “common mustard”, i.e. used in sauces and other preparations. Also, but there is not enough information to know if it is safe to use black mustard  as a medicine that is taken orally or applied to the skin.

Some side effects are known, for example, taking large amounts of seeds by mouth can damage the throat and can also cause other serious side effects, including heart failure, diarrhea, drowsiness, breathing difficulties, coma, and death.

When applied to the skin (topically), especially for a long time, this plant can cause skin blisters and skin damage.

Cautions Warnings :

In the case of black mustard,  special precautions and warnings are required in the following situations.

Pregnancy and breastfeeding:

It is not recommended to use in medicinal amounts if you are pregnant. Also, as it contains chemicals that can start your period and cause a miscarriage.

It is also best to avoid using it as a medicine if you are breastfeeding. Also, it is not known about the effects this may have on you or the baby while breastfeeding.


Black mustard  can lower blood sugar levels when taken as a medication. Also, if you have diabetes and take blood sugar medications, adding this spicy condiment can cause your blood sugar to drop too low. Monitor your blood sugar carefully.


There is concern that it  may interfere with blood sugar control during and after surgery when taken as a medication. Stop using at least 2 weeks before a scheduled surgery.

Black Mustard Dosage  

The appropriate dose of black mustard  to use as a treatment depends on a number of factors such as age, health, and various other issues. Also, at this time, there is no scientific information that determines an appropriate dose of this condiment.

Keep in mind that natural products are not always necessarily safe and dosages can be important. Also, follow relevant instructions on product labels and consult your pharmacist, physician or other healthcare professional before use.

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