From developing new therapies that treat and prevent disease to helping people in need, we’re committed to improving health and well-being around the world.

Our vision is to make a difference in the lives of people globally through our innovative medicines, vaccines, biologic therapies and animal products. We aspire to being the best healthcare company in the world, and are dedicated to providing leading innovations and solutions for tomorrow.

We have made it our mission to provide innovative, distinctive products and services that save and improve lives and satisfy customer needs; to achieve recognition as a great place to work; and to provide investors with a superior rate of return.

We continue to focus our research on conditions that affect millions of people around the world—such as Alzheimer’s and cancer—while expanding our strengths in such areas as vaccines and biologics.

We also devote extensive time and energy to increasing access to medicines and vaccines, through far-reaching programs that donate and deliver our products to the people who need them.

We’re applying our global reach, financial strength and scientific excellence to doing more of what we’re passionate about: improving health and improving lives.

Prescription Products and Prescribing Information

Our core business is the discovery and development of prescription medicines for diseases and conditions that impact millions of people.

We invest billions of research dollars to find medicines that can help improve lives. Today, our company has more than 50 prescription products in key therapeutic areas such as cardiovascular disease, respiratory disease, oncology, neuroscience, infectious disease, immunology and women’s health.

To learn more, click here.


The company is known as Merck in the United States and Canada. Everywhere else, we are known as MSD. Merck & Co., Inc., is the legal name and is listed on the New York Stock Exchange under the symbol “MRK.”


Vaccines are one of the greatest public health success stories in history, and our company has played its part in that story.

We are dedicated to the complex business of researching and producing vaccines. Our unique vaccines have helped prevent a number of diseases, including ones never thought preventable. To learn more, click here.

Animal Health

Through our company’s animal health business, we are a global leader in the research, development, manufacturing and sale of veterinary medicines.

We offer a broad choice of vaccines, anti-infective and antiparasitic drugs, a complete range of fertility management products, pharmaceutical specialty products, innovative delivery solutions, performance technologies, and value-added programs, such as pet recovery services and livestock data management tools. Learn more about our Animal Health business.*

Consumer Products

Effective October 1, 2014, Bayer AG purchased our company’s consumer care business. Read the press release.


We are a global healthcare company that delivers innovative health solutions through our prescription medicines, vaccines, biologic therapies and animal health products.

View a list of products marketed in the U.S.


Our company has a robust pipeline, with a wide range of product candidates across each phase of development. View our pipeline.

Senior Leadership

Kenneth C. Frazier, chairman of the board, president and chief executive officer

Robert M. Davis, executive vice president and chief financial officer

View the list of Executive Committee members.


* Note: The website listed above may refer to products that either are not available in your country or are marketed under a different trade name. In addition, the safety and efficacy data and the withholding periods for a specific product may be different depending on local regulations. Please consult your veterinarian for more information. 

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