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Pfizer to buy Allergan in US$160b deal to create No 1 drugmaker

Acquisition will be biggest this year; Pfizer chief will head combined company

Pfizer stockholders will receive one share of the combined company for each of their Pfizer shares. It takes the cumulative value of deals in 2015 to more than US$600 billion.

New York

PFIZER Inc, the maker of Viagra and Lipitor, has struck a deal to buy Botox-maker Allergan plc in a transaction valued at about US$160 billion, creating the world's biggest drugmaker. New York-based Pfizer and Allergan, headquartered in Ireland, said on Monday that Pfizer would