Our son , who has suffered his entire life with allergies...started using OTC Nasacort. Within less than a week it has eliminated ALL of his symptoms, which were often quite severe. His wife had to cut grass because he couldn't take it.
It blocks the allergens from entering the system through the nasal passage, which is how most people suffer from allergies.
DH and I both suffer from seasonal/regional allergies...usually start with them once we get into TX...amazingly it has done the same for us. Have been in TX a month now and not one symptom.