This foodstuff is approved for treatment of excessive perspiration and cutaneous inflammation, including abcesses, acne, dermatitis and ulcers. Asian medicine employs it as an antihelminthic and aphrodisiac. The active compounds include tannins such as galloylglucose, flavonoids such as hyperoside, and the naphthalene juglone which accounts for the staining effect. The therapeutic effects with include astringent, antibacterial, antiviral and fungistatic (3).
Juglone is mutagenic inducing leukoplakia and tongue carcinoma (3,22). No other health hazards are reported. Walnut is administered by decoction for infusion.