Top 20 Pharma companies in the world

1 Pfizer
2 Sanofi-Aventis
3 GlaxoSmithKline
4 AstraZeneca
5 Johnson & Johnson
6 Merck & Co.
7 Novartis
8 Roche
9 Bristol-Myers Squibb
10 Wyeth
11 Eli Lilly & Co.
12 Abbott Laboratories
13 Boehringer-Ingelheim
14 Takeda Pharmaceutical
15 Schering-Plough
16 Astellas Pharma
17 Daiichi-Sankyo
18 Novo Nordisk
19 Eisai
20 Bayer AG