After a stress test was determened that when my heaert is stressed there is a part of my heart when stressed does not get adaquate blood flow so dr put me on Bystolic also to bring heart rate down,,,well it has done that my blood pressure is not all that low my question is will this med bring heart rate too low...when i awoke it was 55 i think thats wheere my dr wants it Im a 48 year old female with extreme anxiety,Alos i seem to get the shakes really bad on this med is this normal,,,i cant reach teh dr this morning please any info would help