Extrawell Pharmaceutical Holdings Limited is an investment holding company that develops, manufactures, and sells pharmaceutical products in the People's Republic of China and Hong Kong. It operates through Manufacturing and Trading segments. Its products include transfer factor oral solution, Wisk, and ZhouBang, and it also markets and distributes imported products such as Skin-Cap and Millibar. The company is developing an oral insulin product in clinical trials and provides agency services and property investment. Incorporated in 1998, it is headquartered in Quarry Bay, Hong Kong.