Taste and Local Tolerance Study of NLA Nasal Spray in Patients With Allergic Rhinitis

Inclusion Criteria: * 18 to 50 years of age (inclusive) * Body Mass Index (BMI) between 18 and 28 kg/m2 * History of pollen-induced seasonal allergic rhinitis for at least two years and otherwise healthy * Elevated specific IgE to at least one aero allergen or at least one positive skin pick test (SPT) * Seasonal allergic rhinitis with symptoms provoked by the allergen with a corresponding elevated specific IgE or positive SPT * Signed written Informed Consent Exclusion Criteria: * Perennial allergic rhinitis except for cat and/or dog sensitivity under the condition that these patients are not exposed to cats and dogs * Soy bean allergy * Peanut allergy * Smoking during the last month before study inclusion * Any upper respiratory tract infection during the period of 2 weeks before the start of the study * Chronic medication * Any medication, including herbal medicines, during their last five half-lives (t½) * Nasal anatomical deviations * Extensive use of nasal sprays as judged by the Investigator * Ongoing nasal symptoms as judged by the Investigator * Known hypersensitivity to cetirizine * Pregnant or breast-feeding women * Fertile women not using reliable methods of contraception (i.e. IUD, barrier method, hormonal contraceptives, abstinence) * Participation in any other investigational study in the last three months * Inability to adhere to the study plan * Previous inclusion in this study * Blood donation during the last three months