Participants will use the eDrugSafe mobile web platform to manage their medication history and access electronic medicinal product information (ePI). QR codes are provided with each prescription to connect users directly to ePI content.

Participants will use traditional methods, like paper, for managing and accessing medication information. Use of any digital platforms is not permitted in this group.

The eDrugSafe mobile web platform enables management of medication history and provides electronic access to medicinal product information (ePI). QR codes are separately provided for prescription records to facilitate direct access to ePI.

• Assessment: The Korean version of the Morisky Medication Adherence Scale-8 (MMAS-8)
• Units of Measure: Total MMAS-8 score (range: 0-8)
• Description: The MMAS-8 scale consists of 8 items. Each of the first 7 items has 2 possible responses (yes/no), while the 8th item is answered with a 5-point Likert scale. The possible total medication adherence score ranges between 0 and 8, and the higher the score, the better the adherence level. A total score < 6 is considered low adherence, while a total score of ≥ 6 but < 8 indicates moderate adherence, and a score of 8 indicates high adherence.

• Assessment: The Korean version of the Self-Efficacy for Appropriate Medication Use Scale (SEAMS)
• Units of Measure: Total SEAMS score (range: 16-48)
• Description: The SEAMS is a 16-item scale that assesses confidence in managing medications. Higher scores indicate greater self-efficacy and confidence in medication management.

• Units of Measure: EQ-5D-5L Index (-1 to 1)
• Description: Health-related quality of life at the 6-month follow-up will be assessed using the Korean EQ-5D-5L scale, administered electronically. The EQ-5D-5L measures five dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression), each rated on five levels (no problems to extreme problems). Responses are converted to an index value (1: full health to 0: death; below 0: worse than death) using a validated Korean scoring algorithm.

• Assessment: Semi-structured survey guided by the RE-AIM and CFIR frameworks
• Units of Measure: Descriptive statistics of response frequencies (quantitative data) and qualitative analysis
• Description: The survey assesses user perspectives across three areas: study background, experience with e-labels and the platform, and potential for adoption. Quantitative data will include descriptive statistics of response frequencies, while qualitative data will be analyzed using word coding to identify themes such as acceptability, adoption, feasibility, and barriers.