Pfizer expands recall of anti-smoking drug over carcinogen presence

USA – Pfizer has said it is recalling four additional lots of its anti-smoking treatment, Chantix, after finding elevated levels of cancer-causing agents called nitrosamines in the pills. In June, the drug maker said it was pausing distribution of certain lots of the anti-smoking drug out of an abundance of caution and pending further testing. The Food and Drug Administration last year found high levels of NDMA in some versions of the popular diabetes drug metformin. NDMA contamination was responsible for the recall of heartburn drug Zantac sold by Sanofi…

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