AstraZeneca
AstraZeneca plc is a British-Swedish pharmaceutical company formed on 6 April 1999 by the remerger of Swedish Astra AB and British Zeneca Group plc. Zeneca had been part of Imperial Chemical Industries (ICI), as three divisions that were spun off from ICI on 1 June 1993. It is a public company and is listed on the London Stock Exchange, the New York Stock Exchange and the OMX exchange.
GlaxoSmithKline (GSK)
GSK is the world's second largest pharmaceutical company, by employees; and a research-based company with a wide portfolio of pharmaceutical products covering anti-infectives, central nervous system, respiratory, gastro-intestinal/metabolic, oncology, and vaccines products. It also has a Consumer Healthcare operation comprising leading oral healthcare products, nutritional drinks, and over the counter medicines.
sanofi-aventis
Sanofi-aventis, headquartered in Paris, France, is a multinational pharmaceutical company, the world's fourth-largest by prescription sales. Sanofi-Aventis engages in the research and development, manufacturing and marketing of pharmaceutical products for sale principally in the prescription market, but the firm also develops over-the-counter medication. Sanofi-Aventis covers 7 major therapeutic areas: cardiovascular, central nervous system, diabetes, internal medicine, oncology, thrombosis and vaccines (it is the world's largest producer of the latter through its subsidiary sanofi pasteur).
Bristol-Myers Squibb (BMS)
Bristol-Myers Squibb manufactures prescription pharmaceuticals in several therapeutic areas, including cancer, HIV/AIDS, cardiovascular disease, diabetes, hepatitis, rheumatoid arthritis and psychiatric disorders. It is also the parent company of Mead Johnson Nutrition, which manufactures nutritional products such as Enfamil baby formulas and infant vitamin supplements like Tri-Vi-Sol. Bristol-Myers Squibb has a mission to "Extend and Enhance Human Life" and works to discover and develop medicines in areas of serious unmet medical need.
Bayer
Bayer AG is a German chemical and pharmaceutical company founded in Barmen, Germany in 1863. Today it is headquartered in Leverkusen, North Rhine-Westphalia, Germany. It is well-known for its original brand of aspirin.