Pfizer Inc. is one of the world’s largest research-based pharmaceutical and biomedical companies, known for developing, manufacturing, and marketing medications and vaccines for humans and animals. We’re committed to helping you afford your Pfizer prescriptions. From co-pay cards to self-pay savings and help navigating insurance approvals, we’ll guide you to the right support. And if you’re eligible for our programs, we’ll help you get the Pfizer medicines you need. Pfizer (/ ˈfaɪzər /) [3] is an American pharmaceutical corporation. One of the world's largest pharmaceutical companies, it is ranked 64 on the 2020 Fortune 500 list of the largest United States corporations by total revenue. [4][5] It was founded in 1849 in New York City. Pfizer careers are like no other. In our culture of individual ownership, we believe in our ability to improve future healthcare, and potential to transform millions of lives. Starting with Charles Pfizer inventing an almond-flavored antiparasite medicine in 1849, our people have always been innovators and trailblazers, committed to finding the next cure. Pfizer | 7,117,737 followers on LinkedIn. We’re celebrating over 175 years of daring scientific innovation—and we’re not done yet. Let’s outdo yesterday. We’ve transformed growth and development at Pfizer to ensure that everyone can follow a path to their dream career, whether that’s climbing a traditional ladder or “zig-zagging” their way to a new role. Pfizer Quarterly Corporate Performance - Second Quarter 2026 Add to Calendar Event Announcement Webcast Founded in 1849 in New York by German entrepreneurs Charles Pfizer and Charles F. Erhart, Pfizer is one of the oldest pharmaceutical companies in North America. Pfizer develops and produces medication and vaccines for immunology, oncology, cardiology, endocrinology, and neurology. Pfizer is a leading developer and manufacturer of pharmaceuticals and biotech drugs. Its products include oncology and immunology drugs, treatments for rare diseases, and vaccines.