Pigweed: Exploring the Pharmacological Effects of a Traditional Chinese Medicine

January 27, 2024

Pigweed is a traditional Chinese medicine, also known as Pig Hair Seven, Iron Wire Grass, etc. It is harvested in summer and autumn, washed and used fresh or dried. Let's take a look at the pharmacological effects of pigweed with the editor!


Pigweed

Pigweed

[Source] Medicinal source: The whole plant of the ferns Adiantum philippen- seL. and Asplenium yunnanenseFranch. of the family Pteridaceae. It is harvested in autumn, washed and dried or used fresh.

[Alias] Stone bead, Pig Hair Lacquer, Iron Wire Grass, Pig Hair Lacquer, Descending Dragon Grass, Little Pig Hair Seven, Rock Floating Fern, Pig Hair Lung Tendon Grass, Iron Wire Grass, Fish Scale Grass, Black Foot Mang, Pig Hair Seven, Rock Palm, Pig Comprehensive Grass, Iron Wire Grass, Iron Wire Button,

Stone bead, Pig Hair Lacquer, Stone Longevity, Green Silk Return Yang, Touch Grass, Iron Light Stick, Iron Wire Split Gold, Water Pig Hair Seven, Pig Palm Seven, Pig Hair Seven, Black Grass, Fan Leaf Fern, Heart and Lung Grass, Rock Armor, Broom Quill, Iron Bone Wolf Quill.

[Nature and Taste] Light, cool.

[Characteristics] In addition, the whole plant of Adiantum philippen- seL., a plant of the same genus, and Asplenium yunnanenseFranch., a plant of the family Aspleniaceae, are also used as pigweed.

The former is distributed in South China, Southwest China, etc.; the latter is distributed in Yunnan, as described in the Phoenix Tail Pigweed section.

[Habitat Distribution] Ecological environment: 1. Adiantum philippen- seL. likes to grow on wet rocks by streams or slopes with pine forests.


Pigweed

2. Asplenium yunnanenseFranch. grows on wet rocks by mountain streams.

Resource distribution: 1. Adiantum philippen- seL. is distributed in Guangdong, Guangxi, Fujian, Taiwan, Zhejiang, Jiangsu, Jiangxi, Anhui, Hubei, Hunan, Sichuan, Yunnan, Guizhou, Shaanxi, Shanxi and other places.

2. Asplenium yunnanenseFranch. is distributed in Yunnan, Sichuan, Shaanxi, Gansu, Shanxi, Hebei and other places.

[Excerpt] "Compilation of Chinese Medicinal Materials of the Whole Country".

Pharmacological effects of pigweed

1. Functions and Indications

Clears heat and detoxifies; promotes diuresis and relieves stranguria. It is mainly used for colds with fever; lung heat with cough; damp-heat diarrhea; dysentery; turbid stranguria; abnormal vaginal discharge; breast abscess; scrofula; carbuncle and furuncle; burns; snake bites.

2. Usage and Dosage

Internal administration: decoction, 15-30g; or soaked in wine. External use: appropriate amount, decoction for washing; or grind into powder for topical application.


Pigweed

3. Prescriptions

① For treating lung heat with hemoptysis: pigweed, redtop grass, three-ply wind. Decoction for oral administration. ("Sichuan Materia Medica")

② For treating rheumatic joint pain: fresh pigweed one or two taels, soaked in one jin of wine. Warmly take a small handful (about two taels) each time. ("Quanzhou Materia Medica")

③ For treating urinary obstruction in children: two qian of pigweed, three qian of gujing grass. Decoction for oral administration. ("Guizhou Folk Medicinal Plants")

④ For treating hematuria and dysuria: five qian of pigweed, haematite, and iron wire button. Decoction for oral administration. ("Guizhou Folk Medicinal Plants")

⑤ For treating urinary tract infections and stones: three to five qian of pigweed. Decoction for oral administration. ("Selected Yunnan Chinese Medicinal Materials")

⑥ For treating skin itching and eczema: two taels of fresh pigweed, decoction for washing. ("Quanzhou Materia Medica")

⑦ For treating mastitis and blocked milk flow: three to five qian of pigweed. Decoction for oral administration, sweet wine as a guide. ("Selected Yunnan Chinese Medicinal Materials")

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