--- title: CMDh raising risk awareness on Nitrosamines Impurities description: Manufacturers of API and finished products should cooperate with MAHs to prevent nitrosamine formation and contamination of human medicinal products. image: https://blog.pqegroup.com/hubfs/CMDh-raising-risk-awareness-on-Nitrosamine-Impurities_PQE-GROUP.jpg --- [![Logo PQE Group - azzurro - 2024](https://blog.pqegroup.com/hs-fs/hubfs/Logo%20PQE%20Group%20-%20azzurro%20-%202024.png?width=2000&height=721&name=Logo%20PQE%20Group%20-%20azzurro%20-%202024.png "Logo PQE Group - azzurro - 2024")](https://www2.pqegroup.com) - [Home](https://www2.pqegroup.com/) - [Industry](https://www2.pqegroup.com/industry/) - [Pharma & API](https://www2.pqegroup.com/pharma-api/) - [Medical Device](https://www2.pqegroup.com/medical-device/) - [Biotech](https://www2.pqegroup.com/biotech/) - [Startup](https://www2.pqegroup.com/startup/) - [Veterinary](https://www2.pqegroup.com/veterinary/) - [Services](https://www2.pqegroup.com/services/) - [Data Integrity](https://www2.pqegroup.com/data-integrity/) - [Digital Governance](https://www2.pqegroup.com/digital-governance/) - [Engineering](https://www2.pqegroup.com/engineering/) - [Commissioning, Qualification and Validation (CQV)](https://www2.pqegroup.com/commissioning-qualification-validation/) - [Quality Compliance](https://www2.pqegroup.com/quality-compliance/) - [Laboratory Excellence](https://www2.pqegroup.com/laboratory-excellence/) - [Regulatory Affairs](https://www2.pqegroup.com/regulatory-affairs/) - [Audits](https://www2.pqegroup.com/audits/) - [Training](https://www2.pqegroup.com/training/) - [Clinical Research](https://www2.pqegroup.com/clinical-research-services/) - [Pharmacovigilance](https://www2.pqegroup.com/pharmacovigilance/) - About - [About Us](https://www2.pqegroup.com/about/) - [ESG](https://www2.pqegroup.com/about/csr/) - [Women in STEM](https://www2.pqegroup.com/about/women-in-stem/) - Resources - [News & Press](https://www2.pqegroup.com/news/) - [Webinars](https://www2.pqegroup.com/webinars/) - [Blog](https://blog.pqegroup.com/) - [Careers](https://www2.pqegroup.com/careers/) - [Contact Us](https://www2.pqegroup.com/contact-us/) ![PQE Group](https://blog.pqegroup.com/hubfs/PQE%20Group%20logo%202024%20white%20background.png) PQE Group by PQE Group # **CMDh raising risk awareness on Nitrosamines Impurities** [GxP Compliance](https://blog.pqegroup.com/tag/gxp-compliance) ## Important update: Step 1 (risk evaluation) deadline has been extended On September 26th, 2019 the CMDh published the notice “Information on nitrosamines for marketing authorisation holders” asking to all Marketing Authorization Holders (MAHs) of human medicinal products containing chemically synthesised active pharmaceutical ingredients to evaluate the risk of the presence of nitrosamine impurities in their products. This includes generics and over-the counter (OTC) products. **The risk evaluation of all products should be concluded at the latest within 6 months of the publication of the CMDh notification, i.e. by March 26th, 2020.** ## **Deadline extended due to Covid-19 spreading** Taking into account their knowledge of the manufacturing processes and the potential sources of nitrosamine impurities, the manufacturers of API and finished products should cooperate with MAHs to prevent nitrosamine formation and contamination of human medicinal products. - **Step 1 risk evaluation:** MAHs should perform risk evaluation of their medicinal products containing chemically synthesised API using quality risk management principles, as per ICH Q9 guideline and principles described in ICH M7 guideline related to toxicology assessment and control strategy. Prioritization of products is prescribed and risk evaluation of high risk / high priority products should be done immediately (e.g. higher daily exposure and chronic use). Risk evaluation documents should be made available upon request. - **Step 2 confirmatory testing:** if a risk of presence of nitrosamines is identified, then confirmatory testing are required by the use validated and sensitive methods. MAHs should inform the competent authorities immediately if tests confirm the presence of an nitrosamine impurity irrespective of the amount detected. - **Step 3 changes to the marketing authorisation:** MAHs should apply for a variation in a timely manner to introduce any required changes, such as amendment of the manufacturing process or changes to product specifications. **Confirmatory testing and submission of Variations to the Marketing Authorization should be concluded at the latest within 3 years of the publication of the CMDh notification, i.e. by September 2022**. ![CDMh-nitrosammine-impurities-assessment-and-control-ICHm7-guideline](https://blog.pqegroup.com/hs-fs/hubfs/CDMh-nitrosammine-impurities-assessment-and-control-ICHm7-guideline.jpg?width=700&name=CDMh-nitrosammine-impurities-assessment-and-control-ICHm7-guideline.jpg)   ![CMDh-raising-risk-awareness-on-Nitrosamine-Impurities_PQE-GROUP](https://blog.pqegroup.com/hubfs/CMDh-raising-risk-awareness-on-Nitrosamine-Impurities_PQE-GROUP.jpg) ## Want to know more? PQE Supports Marketing Authorization Holders, Manufacturers of API and Manufacturers of Finished products.Our experts have significant expertise with the quality risk management principles (ICH Q9 guideline) and principles of assessment and control of mutagenic impurities in pharmaceuticals (ICH M7 guideline): we provide full support on Risk Evaluation, Risk Management and Regulatory Requirements (ICH Q9 & ICH M7 guidelines). Check out our [Regulatory Affairs](https://www2.pqegroup.com/contact-us/) and [Quality Compliance](https://www2.pqegroup.com/quality-compliance/) Services, and contact our team to request a meeting with our experts./p> [Connect with us](https://www2.pqegroup.com/contact-us/) #### More on this topic [GxP Compliance ![The FDA Guide to AI in Drug Development](https://blog.pqegroup.com/hubfs/FDA%20guidance%20on%20AI_Blog.webp)](https://blog.pqegroup.com/gxp-compliance/the-fda-guide-to-ai-in-drug-development) 30 Jun 2026 ## [The FDA Guide to AI in Drug Development Read more about how the FDA is redefining AI in drug development from regulatory guidance to compliance expectations.](https://blog.pqegroup.com/gxp-compliance/the-fda-guide-to-ai-in-drug-development) [GxP Compliance ![Why Your Path to Sustainability Should Start With ESG](https://blog.pqegroup.com/hubfs/Path%20to%20Sustainability%20ESG_Blog-2.webp)](https://blog.pqegroup.com/gxp-compliance/why-your-path-to-sustainability-should-start-with-environmental-social-and-governance-esg) 09 Jun 2026 ## [Why Your Path to Sustainability Should Start With ESG ESG is reshaping the pharmaceutical industry, discover how new regulations are driving transparency, compliance, and sustainable growth.](https://blog.pqegroup.com/gxp-compliance/why-your-path-to-sustainability-should-start-with-environmental-social-and-governance-esg) [GxP Compliance ![CSA Validation Strategies in SAP S/4HANA®](https://blog.pqegroup.com/hubfs/CSA%20SAP%204%20HANA_Blog-2.webp)](https://blog.pqegroup.com/gxp-compliance/csa-validation-strategies-in-sap-s/4hana) 27 May 2026 ## [CSA Validation Strategies in SAP S/4HANA® Discover CSA in SAP S/4HANA validation and its digital approach focused on risk and efficiency.](https://blog.pqegroup.com/gxp-compliance/csa-validation-strategies-in-sap-s/4hana) ![new PQE logo white tagline](https://blog.pqegroup.com/hubfs/new%20PQE%20logo%20white%20tagline.png) ISO 9001 Certified compliance services provider since 1998.   ![Logo ISO 9001](https://blog.pqegroup.com/hs-fs/hubfs/Logo%20ISO%209001.png?width=125&name=Logo%20ISO%209001.png)   - Discover PQE - [Work with PQE](https://www2.pqegroup.com/careers/) - [Locations](https://www2.pqegroup.com/contact-us/#locations) - [About](https://www2.pqegroup.com/about/) - [Blog](https://blog.pqegroup.com/) - Useful Links - [Privacy Notice](https://www2.pqegroup.com/privacy-notice/) - [Cookie Policy](https://www2.pqegroup.com/cookie-policy/) - [Model of Organization](https://www2.pqegroup.com/model-of-organization/) - [Ethical Code](https://www2.pqegroup.com/ethical-code/) English CHANGE LANGUAGE Copyright **2024** | Proudly powered by **PQE Group Creative Team** [LinkedIn](https://www.linkedin.com/company/pqe-group) [![twitter](https://blog.pqegroup.com/hubfs/twitter-w.png) Twitter](https://twitter.com/PQEGroup) [Facebook](https://www.facebook.com/PQEGroup/) [Instagram](https://www.instagram.com/lifeatpqe) [YouTube](https://www.youtube.com/c/PQEGroup) [Xing](https://www.xing.com/pages/pqegroup)