Workers weigh ingredients as they prepare traditional Chinese herbal medicines at Beijing's Capital Medical University Traditional Chinese Medicine Hospital May 25, 2011. The hospital distributes around 20,000 prescription doses daily, more than five tonnes of ingredients, from their stock of 600 different types of plants, herbs, and animal organs. Almost all traditional Chinese herbal medicine has been banned from sale in European Union (EU) countries since May 1, following the implementation of the Traditional Herbal Medicinal Products Directive that was originally passed in 2004. Under the guidelines, all herbal medicinal products are required to obtain a certificate before entering the EU market, and have a history of at least 30 years, including 15 years in EU regions. REUTERS/David Gray (CHINA - Tags: HEALTH SOCIETY EMPLOYMENT BUSINESS)