MSD was the first company to develop and offer the multiple sparking, capacitive discharge ignition for engines. The line of MSD 6-Series Ignitions are the most popular aftermarket ignitions in the world …

At MSD, we're following the science to tackle some of the world's greatest health threats. Get a glimpse of how we work to improve lives.

From super speedways to road courses, land speed racing to top fuel dragsters, and of course your traditional hot rod, MSD has provided the components to fire nearly anything in motorsports.

MSD aspires to be the premier research-intensive biopharmaceutical company in the world. Learn about our commitment to save and improve lives.

Jul 29, 2025 · Complaints of discrimination with respect to an MSD program or activity, or questions about this notice or any of MSD's non-discrimination programs, policies or procedures should be …

MSD Animal Health is our company’s global animal health business dedicated to preserving and improving the health, well-being and performance of both livestock and companion animals and the …

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Now Free Online - The Professional Version of the MSD Manuals is the global standard in medical reference for Doctors & Students - since 1899.

The company does business as Merck Sharp & Dohme or MSD outside the United States and Canada. The company is ranked fourth on the list of largest biomedical companies by revenue.

Infectious diseases From developing vaccines for Ebola to pioneering research in HIV, MSD has a long history in combating global health threats caused by infectious diseases.