Based on the annual revenue, R&D expenditure, and innovation top 20 pharma companies in USA are:
1. AbbVie
2. Abbott Laboratories
3. AstraZeneca
4. Baxter
5. Bayer
6. Biogen
7. Bristol Myers Squibb
8. Catalent
9. Eli Lilly
10. Gilead Sciences
11. GSK
12. Johnson & Johnson
13. Merck & Co
14. Novartis
15. Organon
16. Pfizer
17. Regeneron
18. Roche
19. Sanofi
20. Vertex
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