The pharmaceutical giant Pfizer has recalled its anti-smoking drug Chantix over concerns that long-term use may elevate cancer risk, according to Healthline. According to USA Today, Pfizer initiated the voluntary recall due to concerns about high levels of nitrosamine, a chemical found in tobacco, tobacco smoke and certain foods. Some nitrosamines have been shown to cause cancer in laboratory animals. While Pfizer has expressed concern over long-term use, the company says that there is no immediate risk to patients who take the medicine.
Pfizer is recalling all lots of .5 mg and 1 mg tablets. The Food and Drug Administration advises all patients who take Chantix to continue taking their medicine as directed until their pharmacist provides a replacement or their doctor prescribes a different drug.