Azeflo Nasal Spray 7 ml is used to treat allergic symptoms like sneezing, runny nose, congestion, stuffy nose or watery eyes. An allergy is a condition that occurs when the immune system reacts to a foreign substance. These foreign substances are known as 'allergens.' Allergic condition varies from person to person. Some might be allergic to certain foods and seasonal allergies like hay fever, pollen or pet dander. One of the main symptoms of allergy is cough, which acts as a reflex action in the throat when there is any mucus or foreign irritant entering the respiratory system.