my age is 48, height 5-4 n weight is 55 married women, suffering from B P higher side , taking supermet xl 25, is there is any side effect from this tablet, some time my BP is high and some time BP is lower side very low. on 11-4-14 my BP was 130/180 on 14-4-14 my BP is 60/120 dont know whats going in my body pl. doctor help me \