Background: Poor drug prescription patterns (PP) result in irrational medicine use, avoidable stock outs and drug expiries.
Objective: This study primarily assessed the effects of PP on the performance of the pharmacy department (PD) of Mbarara Regional Referral Hospital (MRRH) Uganda.
Methods: This was a mixed method cross-sectional study conducted in the outpatient department (OPD) of MRRH, questionnaires were administered to 86 prescribers and 300 patient prescriptions were reviewed.