Own experience of managing 50 patients (22 men and 28 women) aged 19 to 76 years with acute nonspecific lumbodynia or lumbar ischialgia is described. As anesthesia, patients received etoricoxib (Arcoxia) 60 mg daily and muscle relaxants (Mydocalmum 150--300 mg daily or sirdalud 2--6 mg daily). Patients were informed of the favorable prognosis of the disease and received advice regarding physical activity. The duration of treatment ranged from 14 to 28 days and averaged 20,0 ± 7,9 days. Against the background of treatment, the intensity of pain based on visual analog scale decreased from 6,68 ± 5,23 to 1,10 ± 1,24 points, and disability based on the Roland Morris Disability Questionnaire - from 8,70 ± 6,21 to 1,44 ± 1.98 points; adverse events were not observed. A patient case is described in which positive effect was achieved more quickly than in the previous period of exacerbation after surgical treatment (discectomy). The results demonstrate Arcoxia efficacy and safety in the treatment of acute lumbodynia and lumbar ischialgia.