Wyeth (now part of Pfizer)

Wyeth was a major pharmaceutical company known for developing a variety of medicines and vaccines. It gained prominence with products like Premarin (hormone therapy) and the antidepressant Effexor. In 2009, Wyeth was acquired by Pfizer, one of the world's largest pharmaceutical firms, and its operations and product lines became part of Pfizer’s broader portfolio. This acquisition allowed Pfizer to expand its offerings, particularly in vaccines and biologics, strengthening its position in healthcare. Today, Wyeth's legacy continues within Pfizer, contributing to research and development efforts for medicines that improve patient health worldwide.