Nigella Sativa for Selected Outcomes in Chronic Rhinosinusitis

in addition to the standard treatment, the study group will receive one nasal drop of the prepared N. sativa nasal oil drops in each nostril twice daily which are equivalent to a daily dose of 100 milligram of a pure N. sativa oil for four weeks. N. sativa oil was prepared from N. sativa seeds and it was mixed in Sesame oil with a ratio of 1 to 1. The prepared drops will then be placed in dark containers with a specific dropper. Each participant will be instructed regarding the dose, proper position and steps, assisted by a flyer which will be developed by the researcher.

intranasal corticosteroids in addition to nasal irrigation with sea water; for patients with allergy the standard treatment is oral antihistamines with or without oral corticosteroids.