Previous research found that the pharmacist-led IT-based intervention to reduce clinically important medication errors (PINCER) can reduce prescription and medication monitoring errors. This qualitative study explored patients’ perceived acceptability of the PINCER intervention in primary care. Overall perceptions were positive, but participants noted that PINCER acceptability can be improved through enhanced patient-pharmacist relationships, consistent delivery of PINCER-related care, and synchronization of medication reviews with prescription renewals.