Dear doctor, My father has high BP about 160/90 . And after treatment it is not reducing. But he has no symptoms like headache, breathlessness etc. He walks almost 5 km a day without any problem. There is a strong family history of High BP . His all brothers and father have such type of BP. He was taking tazloc but still not reducing now doctor change the medicine to Olkem 40 ct. All required test like holter, TMT test , Eco, angiography were done but no abnormalities expect LBB in ECG. What should I do?? Please help..