In addition, China's over-the-counter market is growing fast and has become the fourth largest OTC market in the world. Foreign enterprises have been closely monitoring the expanding OTC market. Merck announced the launch of OTC program in China in September 2003. Roche listed China as one of its 10 core OTC markets, with the aim of growing its OTC drug sales by 50% in the next five years and reaching 1.3 billion in 2008. Novartis is expanding its OTC market share in China, and Wyeth has also entered OTC market.