1. Physical signs or symptoms suggestive of renal, hepatic or cardiovascular disease.

2. Pregnant or lactating women.

3. Subjects treated with systemic steroids during the previous 30 days.

4. Subjects treated with topical (inhaled, intranasal or intraocular) steroids, Nasalcrom or Opticrom during the previous 30 days.

5. Subjects treated with oral antihistamine/decongestants during the previous seven days.

6. Subjects treated with topical (intranasal or intraocular) antihistamine/decongestants during the previous 3 days.

7. Subjects treated with immunotherapy and are escalating their dose.

8. Subjects on chronic anti-asthma medications.

9. Subjects with polyps in the nose or a significantly displaced septum.

10. Upper respiratory infection within 14 days prior to study start.

Allergic Rhinitis Changes the Sinus Microbiome