Analysis of nitrosamines, nitrites, and nitrates in drugs

In July 2018, public health authorities became aware of the presence of the N-nitrosodimethylamine (NDMA) impurity in Valsartan batches for the first time. In the following months, other nitrosamines in drugs were detected from the same family (sartans), such as Ibersartan or Losartan, and in other drugs such as pioglitazone, ranitidine, and metformin.