There was little difference in thyroid cancer rates among Ozempic and Mounjaro users, compared to those who took Januvia, Onglyza and similar diabetes medications.
Merck indicates it has identified the cause of nitrosamine contaminants in some batches of Januvia and Janumet, which occurs during the manufacturing and storage process.
The cancer-causing contaminant, a nitrosamine, was detected at levels exceeding the daily acceptable allowance set by the FDA, but there will be no recall due to fears of a shortage.
