Study to Find Out How Long it Takes Azelastine Hydrochloride 0.15% Nasal Spray to Relieve Symptoms in Patients Suffering From Allergic Rhinitis

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Updated on 18 January 2022
tubal ligation
nasal congestion
nasal spray
skin prick
hay fever
pollen allergy
nasal symptoms
nasal itching


In this study researchers want to learn how quickly patients suffering from allergic rhinitis (also known as hay fever) can expect symptom relief after using Azelastine Hydrochloride 0.15% Nasal Spray.

This study plans to enrol about 80 male or female participants in the age of 18 to 65 years suffering from an allergic rhinitis to ragweed pollen for at least 2 years. In a first phase participants will be exposed to ragweed pollen in a special study room to ensure they will be adequately symptomatic when they progress into the treatment phase of the study. In a second phase study participants will be divided in 2 groups. After exposure to ragweed pollen one group will receive Azelastine Hydrochloride 0.15% Nasal Spray and the other group will receive placebo (a nasal spray which does not contain any active drug substance). In the third phase of study the treatment will be switched: participants who received in the previous study Azelastine Hydrochloride 0.15% Nasal Spray will receive the nasal spray without any active drug substance and the other group will receive Azelastine Hydrochloride 0.15% Nasal Spray. During the second and third study phase the researchers will examine thoroughly over 4 hours the change of nasal symptoms such as runny nose, itchy nose, sneezing and nasal congestion after participants received the nasal spray.

Condition Allergic Rhinitis, Rhinitis, Allergic, Rhinitis, Allergic, Rhinitis, Allergic
Treatment Placebo, Azelastine hydrochloride (BAYR9258)
Clinical Study IdentifierNCT04264637
Last Modified on18 January 2022

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