high blood pressure
"I was put on a very low dose of Atenolol and after 27 days I stopped taking it.. Worst ever.. My heart pounds, my chest is tight with a burning sensation and difficulty breathing... Add cold soaking sweats and huge bruises on my arms and I have had enough of this poison.. Called my cardiologist and told him I was not taking it anymore and he didn't  call me back... Woke up at 4 am and my heart was beating so hard I thought I was having a heart attack... Happy it works well for some... And, it is the only medication I was on..."