Medicinal plants are known for their uses because of their therapeutic virtues. A study was carried out to establish the medicinal plants to collect all the information concerning the therapeutic uses practiced by the local population in Telagh region (Wilaya of Sidi Bel Abbes. A survey was carried out among people of all ages, pharmacies, and herbalists in the Telagh region using 200 questionnaire cards for four months. From the results it was possible to identify medicinal plants divided into

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... 23-families, among which Lamiaceae and Asteraceae families are the most dominant. Results showed that decoction and infusion are the most used part of remade forms of all cited pathologies. Our results make up a very valuable source of information for the region studied and for the national medicinal flora. The results could be a database for further research in the phytochemistry fields and scientific study of medical drugs.