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Black Walnut Hull, powder

Origin- USA

Also known as

Juglans nigra, English Walnut, Akschota, ructus Cortex, Juglans, Juglandis, Juglandis Folium, Juglans regia, Nogal, Walnut, Walnut Fruit, and Walnut Hull.


The black walnut is native tree of North America. Black walnuts are smaller, harder, and more pungent than the English walnuts sold in grocery stores. The hulls without the meaty kernels inside are used in herbal medicine. Black walnut trees exude a sap that discourages growth of competing plants over their roots.


Juglone, vitamin C, zinc.

Parts Used

The powdered hull.

Typical Preparations

Tinctures, pastes and slurries. Up to 1 teaspoon of the herb 3 times a week taken internally as a tea.


Black walnut hulls contain juglone, a chemical that is antibacterial, antiviral, antiparasitic, and a fungicide. As a skin wash, black walnut hulls are used to treat ringworm and yeast infections of the skin. Taken internally, black walnut hulls are used to treat intestinal worms.


Black walnut hulls are safe for occasional use of up to 2 weeks at a time, but black walnut heartwood is not. Avoid herbal remedies which contain heartwood.

For educational purposes only. This information has not been evaluated by the Food and Drug Administration.
This information is not intended to diagnose, treat, cure, or prevent any disease.