NESSAL DJELLOUD Dounia2025-06-012019-07-11https://dspace.esm-tlemcen.dz/handle/123456789/281the supply chain is an essential process for companies to achieve their objectives and ensure the availability of their products on the market, and the pharmaceutical sector in general . in this context, a dysfunction in the supply chain generates a situation of shortage of medicines with its negative repercussions on public health and the well-being of citizens. this study aims to identify gaps and dysfunctions in the supply chain that can lead to drug shortages, through a study conducted at the Saidal group level . our current work has enabled us to confirm our assumptions made at the beginning of the study, which are: the shortage is caused by a dysfunction in the supply function, the shortage is caused by deficiencies in the production process and the external environment of the supply chain can create a shortage situationfrsupply chainshortagedisruptionproduction capacitysupplyingexternal environment.Thesis