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Do Nasal Filters Reduce Allergy Symptoms? University of Florida Results

This study was done by Shih-Wen Huang, MD and Parker A. Small Jr., MD in the Department of Pediatrics for the College of Medicine at the University of Florida.

Background

Most allergens, including pollen, animal dander and dust mite parts, are larger than 10 microns.  First Defense Nasal Screens remove >99% of particles larger than 10 microns.

Study Design

Volunteers were asked to record symptoms each day for one week in one or more situations (Night-Sleep, Day-inside, Day-outside).  They were instructed to wear the nasal filters on days 2, 3, 5 and 6, but not on days 1, 4 or 7.  They were provided with a data sheed (see image below).

Results

Most women were unwilling to wear nasal filters during the day, for cosmetic reasons, but did wear them at night.  Three volunteers did not complete the study because of perceived resistance to breathing (2) and dislike of the adhesive material.  Of the six who responded to the "anticipated use" question: two were unsure, two probably yes, and two definitely yes.

Preliminary Consclusions

  1. Volunteers who wore nasal filters at night reported decreased scores for ALL symptoms, especially runny nose and nasal congestion.
  2. Effectiveness appears to increase on the second consecutive day of use.

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