Flunisolide Nasal Solution 0.025%Flunisolide Nasal Solution 0. 025% is a prescription medication used for treating seasonal allergies. This solution helps alleviate or reduce symptoms such as runny nose, nasal itching, sneezing, and congestion. Flunisolide Nasal Solution blocks the natural chemicals, such as histamine, which are released during an allergic reaction. To use the Flunisolide Nasal Solution, it must be sprayed into each nostril twice daily, morning and night. Before use,