Species classification
Sprawl one hundred, also known as: one hundred grass (Sui Pu Zi), the wife of grass ("Japanese Hanako Materia Medica"), vine herb one hundred. Herbs perennial, 60-90 cm tall, smooth and glabrous. Root fleshy, usually spindle-shaped, several to several dozen clusters. Upper vinelike stem with vertical stripes. Leaves usually 4 whorled; ovate or ovate-lanceolate, 3 to 9 cm long, 1.5 to 4 cm wide, apex acute or acuminate, entire or whitish, base rounded or nearly truncate , even shallow heart-shaped, midrib 5 to 9; petiole linear, 1.5 to 2.5 cm long. Pedicel filiform, 1.5-2.5 cm long, base adnate to midrib of leaf, usually 1-flowered per stem; tepals 4, pale green, ovate-lanceolate to ovate; stamens 4, purple, filaments Short, anthers introverted, linear, with a linear appendage at the apex; ovary ovate, very small, no style. The capsule is broadly ovate and flat; there are several seeds with long ovals inside. Flowering in May. The fruit period is July. It grows under the shrubs on the sunny slopes or under the bamboo forest. Distribution of Shandong, Anhui, Jiangsu, Zhejiang, Fujian, Jiangxi, Hunan, Hubei, Sichuan, Shaanxi and other places.
Standing one hundred feet, perennial herb, high 30-60 cm. Stems erect, unbranched, with vertical stripes. Ye Chang 3 ~ 4 rounds of birth, even for 5; oval, ovate oval to ovate-lanceolate, 3.5-5.5 cm long, 1.8-3.8 cm wide, apex acute or acuminate, base cuneate, There are usually 5 veins in the veins, and the middle 3 are particularly noticeable; there are short or few sessile stems. Flowers axillary, most of them are squamose in the lower part of the stem near the stem; pedicels slender, erect or obliquely upward. Flowering from March to April. Growing in the mountain forest or under the bamboo forest. Distribution Shandong, Henan, Anhui, Jiangsu, Zhejiang, Fujian, Jiangxi and other places.
One hundred leaves of the Ministry, perennial climbing herb, up to 5 meters. The roots are fleshy, spindle-shaped or cylindrical, 15-30 cm long. The upper stem is entangled. Leaves usually opposite; broadly ovate, 8 to 30 cm long, 2.5 to 10 cm wide, base shallow heart-shaped, full or microwave-like, veins 7 to 11; petiole length 4 to 6 cm. Flowers axillary; flowers with 1 lanceolate bracts; perianth 4, lanceolate, yellow-green, with purple veins. Capsules are ovate and flattened. Flowering from May to June. It grows under sunny shrubbery. Distributed in Taiwan, Fujian, Guangdong, Guangxi, Hunan, Hubei, Sichuan, Guizhou, Yunnan and other places.
In addition, there are plants belonging to the same species of flowers and flowers (Hainan) and leaves of the same species (Lijiang, Yunnan Province).
In China, nervous system drugs are also one of the drugs with the most rapid sales growth in recent years. In 2002, nervous system drugs occupied 5.9% of the entire pharmaceutical market share, and the total sales amount increased by 9.4%.
With the increasing trend of urbanization and aging, the elderly population in China has exceeded 120 million, and the incidence of geriatric diseases, especially mental diseases, is increasing year by year. With the increase of residents' income, the elderly's requirements for quality of life also increase. As a result, the demand for drugs to treat mental illnesses such as Alzheimer's has soared. In WHO drug classification, psychotropic drugs and nootropic drugs are grouped into one class. We briefly analyzed the development trend of this class of drugs through the clinical drug use data collected from more than 300 domestic key hospitals by Chinese Pharmaceutical Association.
The overall market size of this class of drugs is about 1.22 billion yuan, the consumption sum increased by 5.0% in 2002, but the sales quantity increased by 11.2%. The main reason why the consumption sum did not increase with the sales quantity is that several main varieties of this class of drugs, such as piracetam, cobalt bin amide and ginkgo biloba leaf, etc. In 2002, the price of selling units fell sharply due to bidding. Among these drugs, ginkgo biloba preparation occupies the largest market share, accounting for more than 1/3 of the market share, ganglioside ester and cobalt bin amide combined also occupy nearly 1/3 of the market share, piracetam and other "sitan" drugs occupy nearly 10% of the market share, the rest of the drugs occupy less than 5% of the market share. At present, more than 20 ginkgo leaf production enterprises, piracetam production enterprises more than 70, have entered the stage of price competition, profit repeatedly diluted.
In the first-line varieties, except ginkgo biloba leaves preparation maintained vigorous vitality, the growth of other varieties were weak, especially the traditional variety piracetam suffered from bidding
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