Semen Ginkgo


The seed (removed off the outer spermoderm) of Ginkgo biloba L., family Ginkgoaceae.

Seed ovate or elliptical, 1.5-3.0 cm long. Inner spermoderm, hard, yellow-white, smooth base with 1-2 round dotted protuberances, maigm ridgy. Kemel oblate and yellow-green, endosperm thick and soft. Sweet, acrid and astringent in taste, mild in nature, slightly toxic, and attributive to lung channel.

1. Astringe the lung and relieve dyspnea: For dyspnea and cough, usually used together with Merba Ephedrae, Semen Armeniacae Amarum and Radix Glycyrrhizae.
2. Clear away turbid substance and decrease frequency of micturition: For leucorrhagia, white and turbid urine, frequent micturition and nocturnal emission.

Pharmacological Action
Its neutral nitrogen-free component may cause convulsion and paralysis of medulla oblongata in mice.

Administration Decoction:

It should be decocted for a longer time. Crude seed or large dosage may cause poisoning which manifest as vomiting, abdominal pain, diarrhea, coma, somnolence, convulsion, fever, dyspnea, cyanosis, etc., or even death. For moderate toxicosis, decoction of 30g of Ginkgo outer spermoderm or 60g of Radix Glycyrrhizae, or 0.3g of Moschus may be applied.


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Mr. Wang Tao

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