A drugmaker is recalling the popular heartburn drug Zantac over concerns it may contain impurities that might cause cancer.
Glaxo-Smith-Kline announced the recall as a precaution after the U.S. Food and Drug Administration found "unacceptable" levels of a likely cancer-causing impurity in the drug.
A number of blood pressure medicines have been recalled in recent months over the same concerns.
The recall does not include over-the-counter dosages, which are produced by a different company.
It does impact four prescription-only medicines, a syrup, an injection and the 150 and 300 milligram tablets.