hey guys Im 41 yrs old 6ft3 245lbs good health exept Ive recently been diagnosed with psvt/hpb that I had thought was panic/anxiety dissorder now they say its not,in fact Im about to undergo testing for somthing called pheochromocytoma,an adrenale gland test for tumors,any way Ive been perscribed toprol xl 50mgs for the heartrate plus bloodpressure,given my data plus knowing my resting heartrate is 62,how much of a drop can I expect with this med at this dose,please help me I realy need some reliefe ive been this way for 6 months,I know some of you may have read one of my posts b4thanks........crazyhorse