Abstract
With increasing medicine use, more medicines are being stored at home, yet the understanding of household medicines remains limited. This study aimed to assess the amount, type and storage practices of medicines in households. It also explored the reasons for unnecessary or expired medicines, as well as the factors associated with the presence of expired medicines in a household. The online survey was conducted among loyal customers of University Pharmacy in June 2023 (n = 5004). The data were analysed for frequencies and percentages, and binary logistic regression was used to examine the association between background factors and expired medicines in households. On average, one household had 13.9 active, 2.8 unnecessary and 2.2 expired medicine packs. Medicines were typically stored in the kitchen (67.0%) and in cabinets (58.7%), and 40% were to be stored safely. The main reasons for unnecessary or expired medicines were improved health (39.2%), medication changes (31.9%) and oversized packs (28.0%). Households returning medicines biennially (odds ratio (OR): 2.85; 95% confidence interval (CI): 2.13-3.82) and those with many active medicines (OR: 2.14; 95% CI: 1.79-2.54) had expired medicines more often. The study showed that households had many medicines, highlighting the need for better storage and optimized packaging to improve safety, reduce waste and enhance rational pharmacotherapy.