Semen Pharbitidis


The seed of Pharbitis nil (L.) Choisy or P. purpurea (L.)Voight, family Convolvutaceae.

Seed trigonous, somewhat resembling orange lobes, 4-8 mm long, spermoderm grey-dark or yellow-white, pmtruding at the back, longitudinally grooved in the middle, even on both sides, a ridge presenting on the ventral side, with a rounded hilum at the lower end of the ridge. Chapped and sticky when immersed in water. Bitter in taste, cold in nature, slightly toxic, and attributive to lung, kidney and large intestine channels.

1. Purge the bowels: For sthenia-syndrome with constipation and abdominal distention.
2. Eliminate retention of fluid and remove edema:For sthenia-syndrome with ascites and edema.
3. Eliminate retention of phlegm: For dyspnea, abundant expectoration and epilepsy.
4. Parasitical: For ascariasis and taeniasis.

Pharmacological Action
1. One of its components, pharbitin, is purgative.
2. Large dosage may induce hyperemia of kidney and cause hematuria.
3. Killing Ascaris suis in vitro.

Administration Decoction:
3-9g, crushed, decocted later. Powder: 1.5-3.0g.

Overdosage may irritate the digestive tract and vomiting, abdominal pain, severe diarrhea, or even hematuria; may irritate the kidney to cause hematuria; may damage the nervous system and dysphasia and coma. Contraindicated for pregnant women and persons with general debility.


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Mr. Wang Tao

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