Apr 1, 2010

MMH: From the Lab ~ Black Walnut Hull

Black Walnut Hull, botanically known as Juglans nigra, was called the "Imperial Nut" by Greeks and Romans due to its many uses. Russian hospitals have used it since the early 17th century, some uses include:

Black Walnuts are commercially shelled in the United States to be used as a food ingredient. The nutmeats offer crunch and distinctive flavor in ice cream, cakes, cookies, pies and even fudge. You may also find it in chicken, pork, fish, pasta, vegetable and salad dishes.

Health:Black Walnut Hull is purported to support healthy digestive, immune and respiratory systems and has also been used topicallyy as an antiseptic. According to the following reference, Black Walnut Hull is also an anti-parasitic herb: Mindell, Earl R. The MSM Miracle. Keats Publishing, Lincolnwood, Illinois, USA, 1997:34-35.

black walnut hull

Botanical InformationBlack Walnut, also konwn as American Walnut, is a large deciduous tree native to eastern North America. you will find it growing mainly alongside rivers.

The shell of the nut is covered by a thick husk that exudes a strong smelling, dark staining juice. This juice is called juglone and is a respiratory inhibitor to certain plants. This is why you will find very few plants do well when planted near a black walnut tree. Horses are susceptible to laminitis (a hoof disease) from exposure to black walnut in their bedding. Juglone is also usable as a dark dye or stain.

There are some precautions and contraindications with the use of Black Walnut Hull. It should not be taken by pregnant or nursing women or children under the age of 5 years. While it can be used on pets, it should not be given to horses.

Copyright © 2008-2010 Mountain Meadow Herbs®, Inc. . All rights reserved worldwide. This article may be reproduced provided it stays completely in tact, with no information added or removed. The FDA has not given approval of this information. The information provided is to help with product selection only, it is not intended to diagnose, treat, prevent or cure any disease or other complication.


  1. Why should you not use black walnut hull for children under the age of 5? Just curious. Thanks!!

  2. Dear Stephanie,
    Thank you for your question. The juglone constituent of the Green Black Walnut Hull is quite strong and not suggested for small children. We suggest Para-Rid (which has a much lower concentration of the Black Walanut Hull Extract for children 2 and over and Olive Leaf Liquid Extract for those under 2.