Pfizer recalls some Chantix products across US over possible cancer risk

Chantix, a prescription drug designed to help adults break their smoking habit, has been recalled by Pfizer, the company behind the product. A dozen lots of the medication have been recalled across the US over the potential presence of a nitrosamine impurity above the company’s acceptable daily intake limit. The impurity that spurred this recall is called N-nitroso-varenicline; it is …