Flonase, 4 Hour Allergy Relief Fluticasone Propionate Nasal Spray, 50 Mcg, 144 CountProduct Description Temporarily relieves these symptoms of hay fever or other upper respiratory allergies nasal congestion itchy nose runny nose itchy, watery eyes sneezing. For symptoms triggered by allergens like pollen, mold, dust or pet dander. Full prescription strength. You may start to feel relief the first day and full effect after several days of regular, once a day use. Product Benefits Full Prescription. Fluticasone Propionate Nasal Spray.