Hello, You should not use nasivion for long time . It causes rebound phenomenon that is the blockage will be more than before. YOu need to take nasal sprays both the normal saline and the steroid sprays , like mometasone or fluticasone proprionate or fluticasone acetate which ever is available. In addition eye drops like olopat eye drops. The best way is always prevention rather than to take medicines , prevent yourself from cold air ,dust , perfumes etc. In stead of cetrizine there are better medicines like ebastine or loratidine. In doubt do reply