Application of QR Code In Improving Public Knowledge About Beyond Use Date (BUD) of Medicine In Tanjung Rejo Village Percut Sei Tuan Deli Serdang: Penerapan QR Code Dalam Peningkatan Pengetahuan Masyarakat Tentang Beyond Use Date (BUD) Obat Di Desa Tanjung Rejo Percut Sei Tuan Deli Serdang. jukeshum 2025, 5 (1), 141-146. https://doi.org/10.51771/jukeshum.v5i1.1198.