Pfizer Prescription Drugs

During the 1980s Pfizer increasingly concentrated on enhancing its prescription drug capabilities. The ratio of R D expenditures to sales surged from 5 percent in 1980 to 9 percent in 1988. Its number of lines broadened. Antibiotics, which had accounted for 37 percent of sales in 1980, dropped to... 

The drug in the news in 1999 was Viagra, Pfizer s cure for male impotence. In the first three months after its release in 1998, 2.9 million prescriptions were issued for Viagra. It contains a simple benzene ring and a more complex heterocyclic system, which can be divided into two aromatic heterocyclic rings. 

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