Merck Pharmaceutical Products

Merck & Co., Inc. (known as MSD outside the United States and Canada) is one of the world's largest pharmaceutical companies, with a history dating back to 1668 when it began as a pharmacy in Germany. While the original German Merck KGaA and the American Merck & Co. became separate entities following World War I, the American Merck has grown into a dominant global force in healthcare, particularly in oncology, vaccines, and animal health.

Manufacturing for Merck products occurs at specialized facilities across the globe, with major production hubs in the United States, Puerto Rico, Ireland, and several Southeast Asian nations. The company's recent growth has been largely driven by its oncology powerhouse, Keytruda, which represents a significant portion of its global pharmaceutical sales. Operations are strictly regulated by international health authorities to ensure the consistency of medicine production across all territories.

Today, Merck & Co., Inc. is a publicly traded company headquartered in Rahway, New Jersey. It operates as an independent entity from the German Merck KGaA. The company continues to invest heavily in research and development, focusing on revolutionary treatments for cancer, infectious diseases, and cardiometabolic disorders, maintaining its position as a primary innovator in the global life sciences sector.