Walnut bark

Walnut bark

(records of traditional Chinese Medicine)

[synonym] Catalpa bungei (Gansu traditional Chinese medicine manual), Catalpa bungei (traditional Chinese medicine records).

[source] it is the branch bark or dry bark of Juglans mandshurica. See "Juglans mandshurica fruit" for plant morphology.

[collection] harvest in spring and autumn, peel the branch skin or dry skin, and dry in the sun.

[medicinal materials] the dried bark of the branch is often twisted into rope or single drum shape, with different lengths, up to more than 1 meter. The thickness is 1-2 mm. The outer surface is light gray brown, smooth, with button longitudinal grain, and a few light brown round protuberant lenticels, and triangular leaf marks. The inner surface is dark brown, smooth and with fine longitudinal lines. It is tough, not easy to break, easy to longitudinal crack and fibrous in section. The taste is slightly bitter and slightly astringent. The water extract is light yellowish brown and does not show fluorescence.

Produced in Henan, Hebei, Shaanxi, Heilongjiang, Jilin, Gansu and other places.

This product is used in most parts of China, but according to the records of Materia Medica, cortex Fraxini should be the bark of Carpinus pubescens. See "Qinpi" article.

[chemical constituents] the bark, leaves and exocarp contain glycosides and tannins. The content of tannin in leaves is 6.25-9.35%.

[processing] wash, moisten, cut into pieces and dry in the sun.

Bitter, cold.

① Hebei herbal medicine: "it tastes bitter and has a cold nature. "

② "Hebei Traditional Chinese medicine manual": "the nature is flat, the taste is bitter and pungent. "

③ "Shangan ningken Chinese herbal medicine selection": "bitter taste, slightly cold nature. "

Functions and indications: clearing away heat, detoxifying, stopping dysentery and improving eyesight. For diarrhea, dysentery, leucorrhea and red eyes.

① Hebei herbal medicine: "diarrhea, eyesight, dysentery. "

② "Hebei Traditional Chinese medicine manual": "clearing heat and detoxifying. "

③ "Shanganningken Chinese herbal medicine selection": clearing heat and drying dampness. "

[usage and dosage] oral: decoction, 1.5 ~ 3 yuan. External use: wash eyes with boiling water.

[prescription selection] ① for enteritis and dysentery: Walnut peel, walnut peel, walnut peel, walnut peel and walnut peel. Take it in water. (selected Chinese herbal medicines from Shaanxi, Gansu, Ningxia and Qinghai)

② Treatment of chronic bacillary dysentery: Juglans mandshurica skin four money, elm, Chun skin each three money. Take it in water. (Hebei Traditional Chinese medicine manual)

③ Treatment of damp heat leucorrhea: walnut shell, each three money. Take it in water. (selected Chinese herbal medicines from Shaanxi, Gansu, Ningxia and Qinghai)

④ Treatment of acute conjunctivitis: Walnut bark, each three money, Coptis a money. Take it in water. Or with walnut bark five money, fried soup wash eyes. (selected Chinese herbal medicines from Shaanxi, Gansu, Ningxia and Qinghai)

⑤ Treatment of wheat swelling, dry stool: Walnut bark three money, two money. Take it in water. Pregnant women should not take it. (Hebei Traditional Chinese medicine manual)

Chinese PinYin : He Tao Qiu Pi