WASHINGTON (Reuters) - U.S. regulators on Thursday added new warnings about the potential risk of sudden hearing loss to best-selling impotence drugs Viagra, Cialis, and Levitra, used by millions of men.
WASHINGTON (Reuters) - U.S. regulators on Thursday added new warnings about the potential risk of sudden hearing loss to best-selling impotence drugs Viagra, Cialis, and Levitra, used by millions of men.