Hello As you mentioned that you are a patient of allergy and using ceterizine tablets for this purpose. Since diagnosis is established so avoid certain predisposing factors causing allergy , these are : Dust , mite , pollen ,hay , fodder , fine dusting powder, sudden fall and rise of temperature ( change in temperature ), mold ., pests ( cockroaches ) . If possible avoid these factors. When such type of patient visit my clinic I advise them to take Monteleukast+ fexofenadine combination according to need ( whenever require). Hot coffee and steam inhalation also provide relief . Hope this information will be helpful for you.