Survey of potentially inappropriate prescriptions for common cold symptoms in Japan: A cross-sectional study.

Background: Common cold is among the main reasons patients visit a medical facility. However, few studies have investigated whether prescriptions for common cold in Japan comply with domestic and international evidence.

Objective: To determine whether prescriptions for common cold complied with domestic and international evidence.

Methods: This cross-sectional study was conducted between October 22, 2020, and January 16, 2021. Patients with cold symptoms who visited the two dispensing pharmacies and met the eligibility criteria were interviewed.

Main Outcome Measure: The pharmacists at each store and a physician classified the patients into two groups: the potentially inappropriate prescribing group and the appropriate prescribing group.

Results: Of the 150 selected patients, 14 were excluded and 136 were included in the analysis. Males accounted for 44.9% of the total study population, and the median patient age was 34 years (interquartile range [IQR], 27-42). The prevalence rates of potentially inappropriate prescriptions and appropriate prescriptions were 89.0% and 11.0%, respectively and the median drug costs were 602.0 yen (IQR, 479.7-839.2) [$5.2 (IQR, 4.2-7.3)] and 406.7 yen (IQR, 194.5-537.2) [$3.5 (IQR, 1.7-4.7)], respectively. The most common potentially inappropriate prescriptions were the prescription of oral cephem antibacterial agents to patients who did not have symptoms of bacterial infections (50.4%) and β2 stimulants to those who did not have respiratory symptoms due to underlying disease or history (33.9%).

Conclusions: Approximately 90% of prescriptions for common cold symptoms in the area were potentially inappropriate. Our findings could contribute to the monitoring of the use of medicines for the treatment of common cold symptoms.