The tablets may contain N-nitrosodiethylamine, a probable human carcinogen.
The active drug ingredient was made at Hetero Labs in India, one of two drug manufacturers linked to a string of blood pressure medication recalls.
Macleods is the latest drugmaker to recall the blood pressure drug amid heightened safety concerns over the detection of the cancer-causing impurity. Major Pharmaceuticals, Teva Pharmaceuticals, Mylan and Aurobindo Pharma have also recalled blood pressure drugs in the last year.
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