The top 10 biggest healthcare companies in the world currently are:
1. Johnson & Johnson
2. Pfizer Inc.
3. Roche Holding AG
4. Novartis AG
5. Merck & Co., Inc.
6. Sanofi
7. GlaxoSmithKline plc
8. AstraZeneca plc
9. Abbott Laboratories
10. Medtronic Plc
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