Headquartered in Hong Kong, Hua Han specializes in traditional antiaging and antitumor Chinese drugs for women, which it sells under the Yeosure brand.

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As a result, AstraZeneca has become the largest pharmaceutical multinational in Chinese prescription drugs.

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The Hong Kong company aims to strike gold by expanding the global appeal of traditional Chinese medicines and by using modern drug development methods to unearth new drugs within Chinese medicinal herbs.

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MediPharma has two drugs derived from Chinese herbs in midstage clinical trials in the U.S., one to improve the potency of radiation therapy on head and neck cancer and the other to treat Crohn's disease, an inflammation of the digestive tract.

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Sales of the Chinese medicines should cover the development costs of the Western-style drugs.

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Since then, and "despite extensive communications between FDA and appropriate Chinese authorities to correct the problem, we have continued to find residues of certain veterinary drugs or food additives that are not permitted for use in the United States, " she added.

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Now Yunnan is giving the process a Chinese touch: a law is being drafted that will render community leaders responsible if their charges go back to drugs.

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