Lederle Cyanamid Canada

Lederle Cyanamid Canada was a prominent pharmaceutical entity in Canada, operating as a division of American Cyanamid. The company was a leader in the development of essential vaccines, including the oral polio vaccine, and pioneered treatments in oncology and infectious diseases with products like methotrexate and various antibiotics. In 1994, American Cyanamid was acquired by American Home Products, which later rebranded as Wyeth. Following Pfizer's acquisition of Wyeth in 2009, the operations and product portfolio of Lederle Cyanamid Canada were fully integrated into Pfizer Canada. Today, its legacy continues through Pfizer's portfolio in vaccines and specialty medicines.