Merck & Co., Inc. is a global healthcare company known for its innovative pharmaceutical products and vaccines. The company has a strong research and development (R&D) pipeline, which has driven its success in producing life-saving medicines and treatments. Merck's robust portfolio includes key products in oncology, vaccines, and infectious diseases. However, the company faces challenges such as patent expirations, regulatory hurdles, and competition from both generic and branded drugs. The healthcare industry is also subject to stringent regulations and pricing pressures. To maintain its competitive edge, Merck must continue to innovate, expand into emerging markets, and adapt to evolving healthcare policies.