http://www.medications.com/effect/view/18526 HI I'M 45 YR. OLD MALE I'VE BEEN ON TOPROL XL 50 MG. SO FAR EVERYTHING I'VE READ ABOUT EVERYONE WITH THE SIDE EFFECTS HAS ME WORRIED I'VE BEEN ON IT FOR ABOUT A YEAR NOW SO FAR NO SIDE EFFECTS IT HAS LOWER MY BLOOD PRESSURE ALOT ....................