A small nasal filter (Sanispira) which fits into the nostrils was shown to be very effective in reducing hay fever symptoms during the peak pollen season last year, This was shown in a group of Italian hay fever sufferers confirmed to be grass pollen allergic on both RAST and skin prick test. The nasal filter users required less rescue antihistamine medication and had fewer symptoms during pollen peaks than non-users. These nasal filters may represent an effective therapeutic option for patients, especially those reluctant to take medication.
