Pfizer (NYSE:PFE) stands at the top of the mountain when it comes to prescription drug sales. Last year, the big pharma company made $45.9 billion from prescription drugs, well ahead of runners-up Novartis (NYSE:NVS) and Roche (NASDAQOTH:RHHBY).
However, Pfizer appears likely to lose its No. 1 spot among drugmakers.
