Merck develops medicines and vaccines to address major health challenges such as cardiovascular disease, diabetes, and cancer. The company conducts extensive research and development to create new treatments, focusing on the pharmaceutical and biotechnology sectors. Merck's products include prescription medicines, vaccines, and animal health products, which are sold to patients, healthcare professionals, and institutions around the world. A key aspect of Merck's approach is its commitment to patient assistance programs that provide free medications and vaccines to those in need. Unlike many competitors, Merck also offers professional resources through platforms like Merck Connect and Merck Manuals, enhancing support for healthcare providers.