Merrell Pharmaceuticals

Merrell Pharmaceuticals is a pharmaceutical company that currently operates as a subsidiary of the global healthcare leader Sanofi. With roots dating back to the establishment of the Wm. S. Merrell Chemical Company in 1828, the firm has a storied history in the American drug industry, including its time as Merrell Dow Pharmaceuticals and Marion Merrell Dow. The company is well-known for the development of significant legacy products such as the antihistamine Allegra (fexofenadine) and the gastrointestinal medication Bentyl. Following a series of mergers, it was eventually integrated into the Sanofi organization, where its expertise and product lines continue to contribute to a diverse therapeutic portfolio. Today, the entity primarily serves as a legal and brand component within Sanofi's broader operations in immunology, oncology, and cardiovascular health.