Sorry, you need to enable JavaScript to visit this website.

Areas of Focus

Revolutionary medicines enable us to enrich and extend life for people living with all types of diseases. 

Internal Medicine
View All Internal Medicine

We’re developing therapies to treat, slow, or prevent disease progression and improve the quality of life for patients with obesity, type 2 diabetes, and cardiovascular and kidney diseases. 

Inflammation & Immunology
View All Inflammation & Immunology

We look for treatments that provide more than just symptom relief, in order to address the root cause of chronic inflammatory diseases at a molecular level

Vaccines
View All Vaccines

Vaccines are the single most important innovation in the science of health to significantly reduce the threat of diseases that were once widespread and oftentimes fatal. 

Vaccines 
Milestones 
Pipeline & Clinical Trials 

Oncology
View All Oncology

Cancer treatment needs to be transformed across the entire landscape to significantly improve the lives of cancer patients worldwide.

Oncology
Biology into medicine
Advocacy 
Global Impact

Highlights

This is our rallying cry as our scientists relentlessly pursue breakthroughs that will change patients’ lives.

2023
Science
Will Win

"There are so many losers. They’re everywhere. Doubt, fear, sorrow. They lose.” This is what happens when science wins."

Watch Science Will Win on YouTube.

Clinical Trials

We proudly partner with thousands of study sites and tens of thousands of trial participants around the world. It’s these clinical trials that lead to life-changing medicines.

Go to Pfizer Clinical Trials Site Details

Diseases & Conditions Index

Explore all of our disease and condition-related resources to learn more about your diagnosis and treatment options. 

Search for a Disease or Condition Details

Partnerships

Fellow organizations actively researching bold scientific ideas, capabilities, and technologies partner with us to bring innovative treatments to patients in need. And we continually seek new partnerships in several key interest areas.

Learn About Our Partners Details

Research Sites

We have Research & Development colleagues across the world to support our product pipeline. Details from major Research & Development locations are listed below

Andover, Massachusetts Research Site front entrance
Andover, Massachusetts

A 70-acre site that combines state-of-the-art R&D facilities with flexible, multi-product manufacturing capabilities

Cambridge, Massachusetts Research Site building
Cambridge, Massachusetts

Located in Kendall Square, our Cambridge site interlaces Pfizer’s R&D capability with the densest biomedical community in the world

Groton, Connecticut Research Site front Pfizer signage
Groton, Connecticut

Where nearly every one of our products are, in part, developed

 La-Jolla.webp
La Jolla, California

With more than 500,000 square feet of state-of-the-art facilities, this is where our scientists discover and develop cutting-edge cancer therapies using advanced laboratories and equipment.

Pearl River, New York Research Site campus aerial view
Pearl River, New York

The primary location for our company’s global Vaccine Research and Development work

Sandwich, UK Research Site building front
Sandwich, UK

Home of the Pharmaceutical Sciences and Global Regulatory Affairs groups

St. Louis, MO Research Site front entrance
St. Louis, MO

A 300,000 sq. ft. facility producing innovative emergency care products that serve unique needs during severe medical crises

  1. Pfizer. 2024 Annual Review. Published March 13, 2025.
  2. The Patients Reached metric is calculated from Pfizer and third-party datasets. Figures may be limited given the coverage provided by external sources (e.g., calendar duration, geographic and product coverage) and are subject to change. Numbers are estimates and, in some cases, use global volume, daily dosage and number of treatment days to facilitate calculations. Methodologies to calculate estimates may vary by product type given the nature of the product and available data. Patients taking multiple Pfizer products may be counted as multiple patients toward the total. Numbers include estimated patient counts from our “Accord for a Healthier World” program. Numbers do not include comprehensive estimated patient counts from Ex-U.S. Patient Support Programs. Historical estimates may periodically be subject to revision due to restatements in the underlying data source.