Dawei Yao, Chinese medicine name. Also known as squid grass, cat tail grass, elephant trunk grass, big dog tail, etc. Harvested in autumn, used fresh or dried. Let's take a look at the specific pharmacological effects and contraindications of Dawei Yao!
Dawei Yao picture
[Pharmacological Effects of Dawei Yao]
The water extract of the root can lower blood pressure and stimulate respiration when intravenously injected into anesthetized cats, and it has an inhibitory effect on the isolated frog heart; the alcohol extract has no effect.
The water extract has no significant effect on the isolated guinea pig ileum, but can increase the tension of the isolated rabbit duodenum; the alcohol extract has an inhibitory effect in both cases.
It has no effect on the abdominal rectus muscle of frogs, but has a significant stimulating effect on the isolated rat uterus.
Both the water extract and the alcohol extract have oxytocin-like effects. The extract of the leaves has an anti-tumor effect (prolonging the lifespan) on Schwartz leukemia (ascites type) in mice.
[Dawei Yao Toxicity]
The water extract has slight toxicity in mice, while the alcohol extract has no apparent toxicity (0.8ml of 1:1 concentration injected into the abdominal cavity does not cause death).
[Functions and Indications of Dawei Yao]
Diuretic; anti-inflammatory; detoxification. Mainly used for pneumonia, empyema, sore throat, oral ulcers, bladder stones, and abscesses.
① "Fujian Folk Herbal Medicine": Diuretic, heat-clearing, anti-inflammatory, and detoxifying. Used to treat fever, rashes, pneumonia, and empyema.
② "Nanning Drug Chronicle": Anti-inflammatory, detoxifying, dispersing accumulation. Internally used to treat bladder stones; branches and leaves are boiled with lime water for fumigation to treat snakehead sores.
Dawei Yao picture
③ "Fujian Minnan Folk Herbal Medicine": Used to treat sore throat, cough, early stage of abscesses, and oral ulcers.
[Contraindications for Dawei Yao Consumption]
"Nanning Drug Chronicle": Pregnant women should not take it.
[Treatment Prescriptions for Dawei Yao]
① Treatment for scabies and abdominal pain: Fresh whole Dawei Yao herb, one to two liang. Boil and drink.
② Treatment for pneumonia, lung abscess, empyema: Fresh whole Dawei Yao herb, two liang. Boil, add honey and drink; or crush and squeeze the fresh whole herb, two to four liang, mix with honey and drink.
③ Treatment for testicular swelling and pain: Fresh Dawei Yao root, two liang. Boil and drink.
④ Treatment for infantile convulsions: Dry Dawei Yao root, four qian; dry yellow bile grass, three qian; add a little salt, stew with water and drink.
⑤ Treatment for oral ulcers: Crush and squeeze the fresh leaves of Dawei Yao, rinse and gargle with the juice, four to six times a day.
⑥ Treatment for abscesses: Fresh Dawei Yao root, two liang, add a little salt, boil and drink; separately take fresh leaves, mash with cold rice and apply as a poultice. (Prescriptions from "Fujian Chinese Herbal Medicine")
