Proven to reduce allergic rhinitis, the most common type being Hay Fever.The nasal lining acts as a barrier, which is how Prevalin Allergy Nasal Spray functions. Prevalin treats the primary cause of hay fever before any symptoms show themselves, as opposed to treating hay fever symptoms once they have already started. Prevalin takes a new method to treating hay fever by coating the inside of the nose, deactivating pollen, and addressing the cause of the symptoms. This treatment eliminates the severe adverse effects associated with other hay fever medications. The special formulation of Prevalin allergy nasal spray rapidly transforms from a gel to a liquid state after shaking, making it simpler to spray into the nose.