Science-based solutions for controlling nitrosamine impurities in medicines

Elevated levels of nitrosamines – a probable carcinogen – have been found in some commonly prescribed medicines. They pose a risk of physical harm to patients and can undermine trust in medicine quality, harming patients who may be reluctant to take the medicines they need to stay healthy.

Nitrosamine impurities can disrupt drug supply chains and even lead to shortages resulting from product recalls and withdrawals.

Industry and regulators grapple with challenges in both nitrosamine detection and control. More recently discovered Nitrosamine Drug-Substance Related Impurities (NDSRIs) have further complicated the issue.

scientists talking about nitrosamine impurities
scientists talking about nitrosamine impurities

Nitrosamines Analytical Hub

Our Nitrosamines Analytical Hub is a public, web-based repository of downloadable analytical procedures to test for nitrosamine impurities and related substances in pharmaceuticals, housed at our Nitrosamines Exchange.

Access the community

keeping medicines safe

Infographic

Nitrosamine Impurities: Keeping medicines safe

nitrosamines information

Video

Tackling nitrosamine impurities in medicines

scientific understanding of nitrosamines

Perspectives

Leading with the science: Read the latest from USP authors

Official USP Impurity Reference Standards

Regulatory bodies such as the U.S. FDA and ICH require impurity testing and control to ensure drug safety and efficacy. Failed impurity testing and appearance of degradant impurities in drug products also can indicate a manufacturer’s inadequate understanding of its own production process, limited assessment of potential impurity sources, or poor stability testing practices.

USP Impurity Reference Standards are built on a foundation of rigorous science and developed based on input from a global independent network of scientific experts knowledgeable in R&D, manufacturing, regulations and healthcare.

By using USP Impurity Reference Standards and validated methods in USP-NF monographs and general chapters, you can increase confidence and reduce risk throughout the drug development and manufacturing process, saving time and resources.

Search the USP Store

Quick links