Metoprolol is a beta blocker and will make your heart rate slower. It is also used to control high
blood pressure, so yes, it will have an effect on your
blood pressure, but probably not that much if you are on a low dose. This medication has been around for a long time and is actually pretty safe. Of course, as with any medication, if you experience any uncomfortable side effects, call your doctor, or, if they seem serious, go to the ER.