Pfizer’s quit smoking drug raises heart risks by 72 percent: study


Reuters
July 6, 2011

LONDON (Reuters) – Healthy, middle-aged smokers who take Pfizer’s Chantix or Champix, one of the most popular quit-smoking drugs on the market, have a higher risk of suffering heart attacks or other serious heart problems, a study found on Monday.

British and American scientists analyzed 14 clinical trials of Champix, sold as Chantix in the United States and known generically as varenicline, and found the likelihood of developing serious heart problems resulting in hospitalization, disability or death was almost 72 percent higher in patients taking the drug compared with those taking a placebo.

The researchers urged U.S. drug regulators, who have already issued warnings about Chantix’s safety in certain patient groups, to take note of these new findings.

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