PQRs are a requirement in PIC/S Guide for GMP, Clause 1.4.
Regular periodic or rolling quality reviews of all registered pharmaceutical products, including
export only
products, should be conducted to highlight any overall trends (not necessarily visible
with other quality systems) and to identify product/process improvements by verifying and
identifying:
• the consistency of the existing process(es);
• trends in product data;
• the appropriateness of current specifications for starting materials, intermediates and
finished products;
• to verify compliance of the registered particulars of pharmaceutical products (Marketing
Authorisation);
• deficiencies not detected by routine testing, monitoring or performance metrics; and
• identify opportunities for product and process improvements.