I am taking mibeta SR 40 per day for more than 2 years. I have tried to reduce it to half the tablet as I have developed burning mouth syndrome. My tongue has got red rashes and burnt feeling. If I stop taking mibeta it starts to get cured. But other problems start to disturb me. Like my body starts trembling, My heart feels pressure and my bp goes up. I have been through a lot of depression in my life. In fact still I am going through. Kindly suggest what to do. What is the substitute for Mibeta SR 40.