Background: While the use of prescribing safety indicators (PSI) can reduce potentially hazardous prescribing, there is a need to identify actionable strategies for the successful implementation and sustainable delivery of PSI-based interventions in general practice.Aim: To identify strategies for the successful implementation and sustainable use of PSI-based interventions in routine primary care.Design & setting: Qualitative study in primary care settings across England.Method: Anchoring on a complex pharmacist-ledIT-based intervention (PINCER) and clinical decision support (CDS) for prescribing and medicines management, a qualitative study was conducted using sequential, multiple methods. The methods comprised documentary analysis, semi-s...