Quality Lowdown: FDA Defends Nitrosamine Testing Methods While US, EU Enforcement Continues
The crisis of nitrosamine contamination in prescription drug products continues to roil the world’s health authorities and prompts debate on the different approaches used to measure these impurities. Meanwhile, an Austrian firm gets inspected despite the pandemic and yet another homeopathic firm gets an FDA warning letter.
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PCCA repackaged adulterated APIs, Allay failed to understand processes, ShangRao and Mexican firms peddled subpotent, sometimes methanol-tainted ethanol.
The US FDA managed to issue 94 drug GMP warning letters last year despite the pandemic, with fewer expected for 2021. Top issue areas included lack of sterility assurance, nitrosamine impurities, poor data integrity and basic GMP failures.
The USP has launched an initiative to address the nitrosamine crisis by proposing a new general chapter that outlines a set of analytical methods that manufacturers can use to demonstrate their products are free from unsafe levels of these potential carcinogens. The chapter is aligned with the FDA’s guidance on nitrosamine impurities.