Treatment of Olfactory Dysfunction in Seasonal Allergic Rhinitis

Inclusion Criteria: 1. Males and females between 18 and 59 years of age. 2. Seasonal allergic rhinitis by clinical history, with symptoms of impaired olfaction. 3. Positive skin or RAST test to allergen. 4. Symptoms of olfactory dysfunction. 5. No significant history of chronic sinusitis. Exclusion Criteria: 1. Women of childbearing potential not using the contraception method(s) (Birth control pills, depo Provera, double barrier) as well as women who are breastfeeding. 2. Patients with severe medical condition(s) that in the view of the investigator prohibits participation in the study (heart, lung, kidney, neurological, oncologic or liver disease). 3. Use of any other investigational agent in the last 30 days. 4. Absence of olfactory or nasal symptoms. 5. Use of medications that may affect olfaction. 6. Medical conditions that may affect olfaction. 7. Smoking. 8. URI at the time of screening.