To investigate the use of therapeutic herbs in Ain Temouchent, (Algeria), we interviewed 150 residents 95 women (63%) and 55 men (37%) utilizing a survey that is semi-structured. Participants were randomly selected without prior appointments. We collected primary data on plant names, parts used, preparation methods, usage categories, and diseases treated. Statistical analysis was performed using Microsoft Excel 2016 for Windows, and quantitative analysis utilized the indices RFC, UV, and IFC. Our study identified 66 medicinal plants used for various ailments, encompassing 62 genera and 29 families. The most notable families are Asteraceae and Lamiaceae (15% each), and Apiaceae (14%). Mentha spicata L. (0.35) was the most frequently cited species, followed by Citrus limon (L) Burm.f., Thymus vulgaris L. (0.33 each), Eucalyptus globulus Labill. (0.32), and Lavandula stoechas L. (0.31). The most widely utilized plant parts are leaves, fruits, and aerial parts, with oral administration having the highest prevalent method. Decoction and infusion are the primary preparation techniques. Informants showed the highest consensus on the use of these plants for respiratory (0.74) and digestive (0.61) diseases.