Phenylephrine
"After 125 standard allergy tests and told "no reaction" I was pronounced as having "chronic non-allergic vasomotor rhinitis". I truly believe that my biggest problem was from corticosteroid nasal sprays prescribed, but never overused. I've found phenylephrine has helped in a variable increased dose. When the wind blows primarily in the fall, whatever is out there causes my problem. If I take 2 10mg to start my day, I'm in good shape with the regular dose the rest of the day."