My heart rate has been high and dr has been trying me on differnt meds to bring it down the last med was tiazac,,,,i stopped it on thursday last week,,,since then my heartrate has gone from the 70s to 100s but mostly staying in the 80s,and my blood pressure is fine im wondering would i need to still be on a medicine if my heart rate stays in the 80s, my dr gave me coreg to try because the tiazac made me so dizzy but since going off the tiazac things have calmed down,the nurse said if i went on tiazac it would stablize things but i dont want to take it when things are low,,,will i harm my self by just letting my heartrate do its own thing .I hate to have to be on a med if i dont need it aand im still feeling dizzy any advice