Pfizer Vows to Revive Viagra

Executives of Pfizer said Tuesday that they were disappointed in the sales of Viagra and vowed to take steps to rebuild the impotence drug's market potency.

The comments came during a telephone conference call with analysts after Pfizer reported that first-quarter worldwide sales of Viagra declined 12% to $416 million, while the U.S. sales component sank by 25% to $220 million. Foreign sales rose 8% to $196 million compared with those in the same period last year.

Viagra has been sold in the U.S. for six years, and the drug had a monopoly here for more than five years. Last year, worldwide Viagra sales produced $1.88 billion, or 4% of corporate revenue. ...