NEW YORK--(BUSINESS WIRE)--Pfizer Inc announced that it has updated the U.S. product labeling for CHANTIX® (varenicline), a prescription aid to smoking cessation treatment, to communicate important safety information in a boxed warning as well as in revised warnings and precautions. These updates are based on post-marketing reports and are being made in agreement with the U.S. Food and Drug Administration (FDA). Pfizer is making this information available immediately to U.S. health care providers and patients through multiple communication channels, including letters to doctors and pharmacists, Web site updates, and the CHANTIX patient Medication Guide.
