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.

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Merck & Co., Inc. is an American multinational pharmaceutical company headquartered in Rahway, New Jersey. The company does business as Merck Sharp & Dohme or MSD outside the United States …

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MSD has been innovating ignition technology for over four decades. From our iconic 6AL ignition boxes, to our Pro-Billet distributors, iconic red 8.5mm spark plug wires, power-packed Blaster Coils, and …

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

Together—two essential systems serving one thriving community. Managing wastewater and stormwater more effectively and efficiently, MSD Project Clear is committed to protecting the public’s health, …

At Merck, 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.

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