Pfizer Inc. is one of the world’s largest pharmaceutical companies, generating approximately $60 billion in annual revenue. Although the company historically marketed a broad range of healthcare products and chemicals, prescription medicines and vaccines now make up the majority of its sales. Its leading products include the pneumococcal vaccine Prevnar 13 and the cardiology therapies Vyndaqel and Eliquis. Pfizer markets these products worldwide, with international operations accounting for about 40% of total revenue, and emerging markets representing a significant share of those sales.