I began taking armour thyroid about a year ago...30 mg haven t noticed a difference in how I felt except my labs are responding to it. In December I had bronchitis which seemed to go on and on, the coughing really never went away, just subsided. Recently I had great anxiety due to a bankruptsy and a life changing move. In response I ended up with bronchitis again...it has been over 3 weeks and although I feel better the cough continues...my question (after all that) could it be an allergic reaction to the thyroid meds? Reading the list it does note shortness of breath and heart racing...which I also have.