In April 2025, the WHO published the new guideline ‘TRS 1060 - Annex 2: WHO good practice considerations for the prevention and control of nitrosamines in pharmaceutical products’ on its website, which must be taken into account by manufacturers and packagers of excipients, active ingredients, processing aids and finished medicinal products. It should be noted that WHO Annex 2 is to be regarded as a supplement to the existing GMP guidelines and their requirements with regard to nitrosamines, as set out, for example, in ICH M7 (R2).
