Fructus Psoraleae
Source
Fruit of Psoralea corylifolia L., family Leguminosae.
Characteristics
Fruit flat-reniform, 3-5 mm long. Carpoderrnis dark-brown, with fine 
reticular
marks. Apex with a protruding style scar, base with fruit stalk scars
near the depressed surface; containing two yellow-white interior cotyledons.
Acrid in taste, warm in nature, and attributive to kidney and spleen channels.
Indication
1. Invigorate the kidney and strengthen yang: For insufficency of kidney-yang
manifested as cold pain of the waist and knees, impotence, emission, enuresis,
frequent micturition, cough, dyspnea and ishortness of breath, metrorrhagia
and sterility.
2. Warm the spleen and kidney to stop diarrhea: For chronic diarrhea and
diarrhea before dawn due to deficiency of spleen-yang and kidney-yang.
Recently, also used for leukocytopenia, bronchial asthma and metrorrhagia.
External application of its alcoholic infusion for corn and leukoplakia
vulvae; intramuscular injection and external application of psoralen for
leukoderma and psoriasis.
Pharmacological
Action
1.
Corylifolinin( isobavachalcone) dilates coronary artery significantly.
2. Promoting phagocytosis of macrophage.
3. Exciting the intestinal smooth muscles in vivo or in vitro, and relaxing
the uterus of guinea-pigs in vitro.
Administration
Decoction: 3-9g Psoralen ampule: 1-2 mg IM qd.
External use: Appropriate amount.