The flower bud of Daphne genkwa Sieb. et Zucc., family Thymeiaeaceae.
Buds curved and short, club-shaped, 1.0-1.7 cm long, 1.5 mm in diameter,
3-7 clustered at the rachis; the lower portion of the perianth cylindrical,
and the upper portion 4-lobed; light purple to yellow-green and pubescent.
Acrid and bitter in taste, warrn in nature, toxic, and attributive to
lung, kidney and large intestine channels.
1. Purge and eliminate the retention of phlegrn: For sthenia syndrome
with hydrothorax, ascites, edema and retention of phlegm, used together
with Radix Euphorbiae Kansui and Radix Euphorbiae Pekin ensis.
2. Eliminate the phlegm and relieve cough: For acute and chronic cough.
Recently, also used for chronic bronchitis, psychosis and epilepsy.
1. Diuretic. Oral use of its decoction increases urinary volume by 7-13%
in rats within 5 hours.
2. Its diuretic effect is decreased and its toxicity increased when it
is used together with Radix Euphorbiae Pekinensis and Radix Glycyrrhizae.
Its alcoholic extract or one of its components hydroxy-genkwanin is an
antitussive and expectorant.
4. Intrauterine application of another component yuanhuacine can induce
Decoction: 1-3g; 3-6g daily for psychosis and epilepsy.
Powder or Pill: 0.25-0.5g 2-3 times daily.
This medicine may cause dizziness, headache, pain of the limbs, vomiting,
abdominal pain and buming pain of the stomach. Contraindicated for pregnant
women and persons with general debility.