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Black Walnut Hulls

Veterinarian Reviewed on June 14, 2012 by Paulina Nelega, RH
Posted in Uncategorized

Black Walnut Hulls (Juglans nigra)


Black Walnut (Juglans nigra) is a flowering tree that is native to the eastern parts of North America. The Black Walnut Hull is a part of the Black Walnut tree that is used in many medicinal purposes. This is a large deciduous tree which can grow to as high as 98 to 130 feet. The leaves of the Black Walnut grow in alternates and are 30 to 60 cm long with large leaflets located n the center. The nut is brownish-green in color with a fleshy husk which is colored brown. The whole fruit of the Black Walnut including the Black Walnut Hulls falls in October.

Other names of the Black Walnut are Greek Nut, Carya and sometimes it may also be called Jupiter’s Nut. Although all the parts of the Black Walnut can be used for many purposes, the Black Walnut Hulls are specifically used as a source of fiber to promote good digestion and better absorption of nutrients in the digestive tract. It is also used to kill and expel intestinal parasites.

History and Origin

The Latin name of the Black Walnut tree is derived from the word ‘jovis glans’ which means Jupiter’s nut; it basically tells the story of the Greek gods who temporarily resided on Earth and ate walnuts.

Black Walnuts are native to North America and when it was first introduced in Europe in 1629 it was widely cultivated, from which more medicinal properties of the Black Walnut Hulls were then discovered.

Ancient Uses

Native Americans observed the clear resemblance of the Black Walnut to a human head and it was thought mainly to benefit the brain. Black Walnut Hulls were used to treat kidney diseases in Asia and in many other tribal cultures, the Black Walnut Hulls were used as a treatment for infertility.

In Asia, native tribes have used barks of the Black Walnut tree and green or Black Walnut Hulls are used to expel intestinal parasites. The many parts of the Walnut Tree have many wondrous benefits but the Black Walnut Hulls were used as herbal medicines most of all.

Modern Uses

In modern times, the Black Walnut Hull has been found to have a high tannin content that makes it a great anti helmintic treatment. It is also believed to increase the oxygen levels in a person’s blood stream in order to get rid of parasites in the body.

The Black Walnut Hull extract may also be used as an antiseptic and may also balance the sugar levels within the body. Aside from the high fiber content of the Black Walnut Hull making it ideal to cleanse the gastro intestinal system, it is also able to burn excess toxins and fat. Black Walnut Hull preparations may be in the form of supplements, capsules and extracts of this herbal remedy.

Side Effects

There are no known side effects in using Black Walnut Hull supplements. But it is contraindicated in people with known allergies to tree nuts. If you would like to use this herbal remedy for your illness, ask your naturopathic doctor or herbalist about the formulation and strength of Black Walnut Hulls that you can use.

Read also: Psoriatic Arthritis

Our Expert

Paulina Nelega, RH
Paulina Nelega, RH, has been in private practice as a Clinical Herbalist for over 15 years. She has developed and taught courses in herbal medicine, and her articles on health have appeared in numerous publications. She is very passionate about the healing power of nature. Ask Dr. Jan

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