hi symbiva contains aerosol steriod breating diifficulty due to allergic causes are treated in two phases 1st phase is termination of acute problem or rapid relief to patient for that beta 2 agonists are used they immidiatelty dilates the alveoli and relieves acute breathing problem 2nd phase is long term management of the problem and change the frequency of attacks for that part long acting aerosol steroids are usually given which u have been prescribed by doctor as aerosols reaches the lung directly hence side effects are very mild or almost negligible if you are relieved then keep on taking the inhaler as per the dose prescribed by doctor you cann also add tab montair lc ( levocetrizine and montelukast) a mast cell inhibitor ,it will help you wiyh your symptoms