NEW YORK ( TheStreet) -- A Pfizer (PFE - Get Report) stop-smoking drug increases the risk of cardiovascular events such as heart attacks, according to researchers who analyzed multiple trials involving the drug.After reviewing 14 trials of the drug Chantix (varenicline), the researchers wrote that the drug's use was associated with a 72% risk of "serious adverse cardiovascular events."
Pfizer's Chantix Linked to Heart Problems
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