Black walnut husks have a long history of uses in medicine and folklore in North America, and around the world by ancient Greek cultures and in the Middle East and India, where the tree is found. From an everyday stain remover to a treatment for medical illnesses and conditions, the crushed, broiled or brewed husk of the black walnut, known as Juglans nigra, has been used for many generations for food, medicine and household uses.
Chew the softened black walnut husk for stomach upset. The husks can be softened by soaking in warm water for several hours. Black walnut shells or husks contain a chemical called juglone, considered to contain antiviral, antibacterial, antiparasitic and fungicidal properties. Brewed into teas, the husk of the black walnut has also been used by herbalists to treat rash, eczema and other skin conditions such as psoriasis and herpes warts.
Ancient Turks boiled the husks of black walnuts into a tea for treatment of some gland disorders, such as thyroid. Black walnut hull extract or tincture has been used to treat parasitic infestations in the body. Black walnut extract mixtures and tinctures are available for purchase on the Internet from a variety of sources, or from natural food or vitamin stores. Native Americans pulverized the bark of the black walnut for use against tapeworms and as a laxative.
Treat candida and other yeast fungus with black walnut husk extract, according to Dr. James Duke, former botanist with the USDA and author of "Green Pharmacy Herbal Handbook" (Rodale Press, 2000). He suggests up to 10 to 20 drops of the extract three times a day, or 2 to 3 tsp. of fresh and crushed husks (to be brewed in tea) a day for effective relief.