Oussama Ouali2026-10-132021https://dspace.esm-tlemcen.dz/handle/123456789/469Summary: Medicine has always been the most effective therapeutic tool in health, but due to the phenomenon of shortage and interruption of drug supplies in hospitals now, it has become necessary to search for the reasons behind the interruption of storage and lack of development in hospitals, and to work to reduce this phenomenon which negatively affects the health of the citizen and the return of doctors' work. This note addresses the problem of first-level drug supply in the pharmacy at the University Hospital Center, Isaad Hassani, Beni Messous, especially after the appearance of the coronavirus pandemic. In this study, we talked about the implementation of the role of supply and inventory management at the hospital level, and also the identification and definition of factors that have negative effects on the provision of drugs and the application of the Wilson economic model to mitigate this phenomenon in order to ensure the availability of drugs permanentlyfrHospitalpharmacymedicinesuppliesstock managementmanagementThesis