Hello and thanks for writing in at HCM I am a jr. to cardiologist. You not written clearly about the hypo-tension whether you have recorded Blood pressure manually,(if yes than what is the reading) or patient has some symptoms (if yes than what are they). As you have a history of Coronary Artery Disease and not cleared about the stenosis in the coronary arteries, as CART was not done. So don t stop nikoran and Sorbitrate, consult your cardiologist about the doses. Kindly give the clear picture about the hypotension with symptoms, so that I can give you a clear picture and answer. Best Wishes Dr. Dinesh Kumar Bhatia Health Care Magic