Merck & Co. is an American multinational pharmaceutical company headquartered in the United States, with operations worldwide, including in Canada. The company's core business involves the development, manufacture, and distribution of prescription medicines, vaccines, biologic therapies, and animal health products.
Its research and development efforts span several technical domains, including oncology, vaccines, infectious diseases, cardiometabolic and respiratory diseases, immunology, neuroscience, and ophthalmology. These activities are situated within the broader pharmaceutical and animal health industry verticals.
The company states it fosters an inclusive global workforce and maintains standards of ethics and integrity in its operations. It also states it aims to operate responsibly to support a safe, sustainable, and healthy future for people and communities globally.






