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Merck Corporate Headquarters

2000 Galloping Hill Road
Kenilworth, NJ 07033 U.S.A.
Phone: 908-740-4000
Monday-Friday
8:30 a.m. to 5:30 p.m., ET

Merck in Canada

16750, Trans-Canada Highway Kirkland,
Quebec H9H 4M7 Canada
+1 514-428-7920
Visit Merck in Canada

Worldwide Offices

Merck is known as MSD outside the U.S. and Canada

Product Inquiries

For product information, please visit our products page.

To report an adverse experience with a specific Merck human health product, please call the Merck National Service Center at 1-800-444-2080.
The Merck National Service Center is pleased to assist you Monday through Friday from 8 a.m. to 7 p.m., ET., and product-related emergencies can be reported at any time.

Need help Paying for Your Medicines?

At Merck, we believe that no one should go without the medicines or vaccines they need.

That is why the company provides its medicines and adult vaccines for free to people who do not have prescription drug or health insurance coverage and who, without our assistance, cannot afford their Merck medicine and vaccines.

Animal Health Product Inquiries

To report an adverse reaction or if you have a product-related question, please call Merck Animal Health Technical Services:

  • For Companion Animal (dogs, cats), please call 1-800-224-5318 Monday-Friday during the hours of 8:30 a.m. to 5 p.m., ET.
  • For Livestock, Poultry & Aquaculture (cattle, swine, dairy, poultry & fish), please call 1-800-211-3573 Monday-Friday during the hours of 8:30 a.m. to 8 p.m., ET.
  • For Equine (horses), please call 1-866-349-3497 Monday-Friday during the hours of 8:30 a.m. to 5 p.m., ET.


Frequently Asked Questions

Careers at Merck

Work for what matters. Join a team that's committed to saving and improving lives around the world.
Explore working at Merck

Explore Our Corporate Campuses

Kenilworth

2000 Galloping Hill Road
Kenilworth, N.J. 07033
(908) 740-4000

The 100-acre Kenilworth site is Merck's world headquarters and a main biologics research and development hub for the company. Kenilworth's key therapeutic areas of research and development include: infectious disease, vaccine discovery and neurosciences.

Merck’s Kenilworth site is part of New Jersey's “Biopharmaceutical Life Sciences Cluster,” a concentrated area of biotechnology, medical device, and pharmaceutical companies.

Kenilworth employees who live locally do so for many reasons: The proximity to New York City, nearby parks, open spaces, as well as accessibility to the 1-95 corridor. Northern New Jersey also offers some of the best public schools in the nation.

Employees have access to two on-site cafeterias and a credit union. Employees can take advantage of free shuttles to the Kenilworth campus from Newark Penn Station, Rahway Train Station and Roselle Park Station. Shuttle transportation between Merck sites is also available. For those who drive to work, our Kenilworth location is located directly off the Garden State Parkway.

GET DRIVING DIRECTIONS

Rahway

126 East Lincoln Avenue
Rahway, N.J. 07065
(732) 594-4000

Our Rahway campus opened in 1903 and, since then, has been home to many modern medical breakthroughs. Formerly Merck’s world headquarters, our 210-acre Rahway site has transitioned from an engineering, production and industrial complex to a research-focused office campus. The campus straddles the cities of Rahway and Linden, N.J., and is a quick 15-minute drive from our Kenilworth site.

Employees have access to an on-site cafeteria, credit union and child care facility as well as a fully-equipped gym that features group exercise classes and health education programs.

Employees can take advantage of free shuttles to the Rahway campus from Newark Penn Station and the Rahway Train Station. Shuttle transportation between Merck sites is also available.

GET DRIVING DIRECTIONS

Upper Gwynedd

351 N. Sumneytown Pike
North Wales, Pa. 19454
(800) 672-6372

Located about an hour away from Philadelphia, Pa., our Upper Gwynedd campus is a 90-acre site housing the division headquarters for Merck’s U.S. Human Health and Merck Research Laboratories.

Merck's Upper Gwynedd campus received two Governor's Awards; one for its recycling efforts and one through conservation of green space by reusing an established industrial site. The site’s array of solar panels provide enough power to reduce the complex’s energy consumption by 14 percent.

Employees have access to the Upper Gwynedd Child Learning Center, a credit union, a fitness center, cafeteria, and coffee shop.

GET DRIVING DIRECTIONS

Boston

33 Avenue Louis Pasteur
Boston, Mass. 02115
(617) 992-2000

This state-of-the-art, multi-disciplinary research facility, which opened in 2004, is located in the heart of the Boston/Cambridge Life Science Cluster. Our campus frequently engages the robust academic science community across the street from the labs. These interactions have included major scientific collaborations, hosting educational public seminars, exclusive research symposia and recruiting events.

The 450-employee research center focuses on discovery research in these key areas of focus: immunology, oncology, immunomodulatory receptors (IMR’s), diabetes and neuroscience. The site is comprised of laboratories and staff that support core discovery, preclinical, and clinical functional areas.

GET DRIVING DIRECTIONS

West Point

770 Sumneytown Pike
Lansdale, Pa. 19446
(215) 652-7487

At 500-square-feet and located on over 500 acres, West Point is Merck’s largest pharmaceutical manufacturing facility and located directly down the street from our Upper Gwynedd campus. Our West Point site manufactures and tests pharmaceuticals, vaccines and biological products and serves as the distribution center for other U.S. plant sites. Key therapeutic areas of focus include: Infectious diseases, vaccine discovery, and neurosciences.

Employees have access to an on-site child care facility, cafeteria, credit union, and a fitness center.

GET DRIVING DIRECTIONS

Kenilworth

2000 Galloping Hill Road
Kenilworth, N.J. 07033
(908) 740-4000

The 100-acre Kenilworth site is Merck's world headquarters and a main biologics research and development hub for the company. Kenilworth's key therapeutic areas of research and development include: infectious disease, vaccine discovery and neurosciences.

Merck’s Kenilworth site is part of New Jersey's “Biopharmaceutical Life Sciences Cluster,” a concentrated area of biotechnology, medical device, and pharmaceutical companies.

Kenilworth employees who live locally do so for many reasons: The proximity to New York City, nearby parks, open spaces, as well as accessibility to the 1-95 corridor. Northern New Jersey also offers some of the best public schools in the nation.

Employees have access to two on-site cafeterias and a credit union. Employees can take advantage of free shuttles to the Kenilworth campus from Newark Penn Station, Rahway Train Station and Roselle Park Station. Shuttle transportation between Merck sites is also available. For those who drive to work, our Kenilworth location is located directly off the Garden State Parkway.

GET DRIVING DIRECTIONS

Rahway

126 East Lincoln Avenue
Rahway, N.J. 07065
(732) 594-4000

Our Rahway campus opened in 1903 and, since then, has been home to many modern medical breakthroughs. Formerly Merck’s world headquarters, our 210-acre Rahway site has transitioned from an engineering, production and industrial complex to a research-focused office campus. The campus straddles the cities of Rahway and Linden, N.J., and is a quick 15-minute drive from our Kenilworth site.

Employees have access to an on-site cafeteria, credit union and child care facility as well as a fully-equipped gym that features group exercise classes and health education programs.

Employees can take advantage of free shuttles to the Rahway campus from Newark Penn Station and the Rahway Train Station. Shuttle transportation between Merck sites is also available.

GET DRIVING DIRECTIONS

Upper Gwynedd

351 N. Sumneytown Pike
North Wales, Pa. 19454
(800) 672-6372

Located about an hour away from Philadelphia, Pa., our Upper Gwynedd campus is a 90-acre site housing the division headquarters for Merck’s U.S. Human Health and Merck Research Laboratories.

Merck's Upper Gwynedd campus received two Governor's Awards; one for its recycling efforts and one through conservation of green space by reusing an established industrial site. The site’s array of solar panels provide enough power to reduce the complex’s energy consumption by 14 percent.

Employees have access to the Upper Gwynedd Child Learning Center, a credit union, a fitness center, cafeteria, and coffee shop.

GET DRIVING DIRECTIONS

West Point

770 Sumneytown Pike
Lansdale, Pa. 19446
(215) 652-7487

At 500-square-feet and located on over 500 acres, West Point is Merck’s largest pharmaceutical manufacturing facility and located directly down the street from our Upper Gwynedd campus. Our West Point site manufactures and tests pharmaceuticals, vaccines and biological products and serves as the distribution center for other U.S. plant sites. Key therapeutic areas of focus include: Infectious diseases, vaccine discovery, and neurosciences.

Employees have access to an on-site child care facility, cafeteria, credit union, and a fitness center.

GET DRIVING DIRECTIONS

Boston

33 Avenue Louis Pasteur
Boston, Mass. 02115
(617) 992-2000

This state-of-the-art, multi-disciplinary research facility, which opened in 2004, is located in the heart of the Boston/Cambridge Life Science Cluster. Our campus frequently engages the robust academic science community across the street from the labs. These interactions have included major scientific collaborations, hosting educational public seminars, exclusive research symposia and recruiting events.

The 450-employee research center focuses on discovery research in these key areas of focus: immunology, oncology, immunomodulatory receptors (IMR’s), diabetes and neuroscience. The site is comprised of laboratories and staff that support core discovery, preclinical, and clinical functional areas.

GET DRIVING DIRECTIONS

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