Pfizer Pharmaceutical Company: The World's Largest Pharmaceutical Company

A Pioneering Spirit on the Frontiers of Medicine

1849 – 1899

In 1849, cousins Charles Pfizer and Charles Erhart founded Charles Pfizer & Company in a red brick building in Brooklyn, NY.

1900 – 1950

The new century brought prosperity to Pfizer. The pioneering of the mass production of citric acid from sugar through mold fermentation fueled growth for years.

1951 – 1999

The second half of the 1900´s saw intense pharmaceutical research and great successes for Pfizer.

2000 – Present

After successfully merging with Warner-Lambert and Pharmacia to create the world's fastest-growing major pharmaceutical company, Pfizer continues its mission to become the world's most valued company to patients, customers, colleagues, investors, business partners, and the communities where we work and live.

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Pfizer Corporate Responsibility

Learn more about our commitments and performance in the area of corporate responsibility.

Pfizer Annual Report
Pfizer Annual Report

Learn more about our progress in building a foundation for solid, sustainable growth and
our promise to continue
as a leader in meeting
one of the world's most basic needs: better health care for more people.

Anti-Infectives Timeline

Pfizer has long been at the forefront in the battle against infectious diseases. The story begins with the development of an unprecedented technique for mass-producing penicillin in 1941, and continues on to the present day. Medicines such as Unasyn®, Zithromax® and Diflucan® in the '70s and '80s and Vfend®, Zyvox®, and Eraxis® today, have saved countless lives worldwide, and continue to do so. In parallel to these scientific innovations, Pfizer has also worked for a healthier world through education and philanthropic ventures.