Nitrosamine impurities in medicines: List of medicines impacted

Necessary actions have been taken to stop the supply or remove products that may pose safety risks to patients from the Singapore market. To ensure patients’ continued access to essential medicines, HSA had also temporarily allowed continued supply of certain medicines that may contain nitrosamine impurities above acceptable levels while companies make the necessary changes to eliminate or reduce the nitrosamines to acceptable levels. The list of medicines impacted are listed below.