Known best for its slightly pungent and aromatic nutmeat, the black walnut tree, or Juglans nigra, produces masses of nuts in autumn, encased in thick hulls. While commercial walnut growers sell the nuts for baking and eating, they may later harvest and sell the wood, which is highly desirable in finish cabinetry. Herbalists value the root of the tree, its leaves, bark and especially the discarded hulls that encase the black walnuts. All are available in health food stores or online. Talk to your doctor before using black walnut herbs to treat any medical condition.
Vitamin Content
Ground black walnut hulls and leaves are high in vitamins C, B-1, B-2 and B-6. They also contain beta-carotene, an antioxidant that neutralizes the damage caused by free radicals in the body, according to the "Gale Encyclopedia of Alternative Medicines." Powdered hulls and leaves are available in tea form, or in capsule form.
Skin Conditions
High levels of tannins, quinone and jugalone found in black walnut hulls and leaves might be beneficial in treating minor skin irritations, including fungal infections such as athlete's foot and jock itch. Other skin conditions that may benefit from a topical application of black walnut preparations include blisters, psoriasis, minor skin ulcers and eczema.
Intestinal Parasites
Extract of black walnut herb is an ages-old treatment for worms and intestinal parasites, according to the "PDR for Herbal Medicines." It may also act as a mild laxative. While the PDR lists the black walnut herb as safe for most people, there is no standard dosage, and the FDA does not oversee the production of the black walnut herb or monitor its quality. Talk to a certified herbalist about a safe and effective dosage before taking this herb.
Considerations
Topical application of black walnut products may cause swelling, irritation and a rash in rare individuals, according to the website, "The Herbal Resource." Additional rare side effects include chest pain, tightness and difficulty breathing. Notify a doctor immediately if you suffer from these side effects. As with most herbs, do not take black walnut herbal products if you're pregnant or breastfeeding. Tell your doctor about any medications you're taking before using this herb.
References
- "Gale Encyclopedia of Alternative Medicine, Volume 2"; Jacqueline L. Longe; 2005
- "PDR for Herbal Medicines, 2nd Edition"; Joerg Gruenwald, PhD, 2000
- "The Herbal Resource": Black Walnut -- Benefits and Side Effects
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