I was on Atenolol for about 3 months, for slightly elevated BP, started having chest pain, heart palps, dizziness, anger/depression, couldn't barely drag myself out of bed, Dr, gave me 50mgs, but I was only taking a fourth pill a day, had horrible hair loss and still do 2 months later, It took about 2 weeks for the heart palps to subside after I stopped taking it, these drugs are dangerous, and I feel for the millions of people who continue to believe that there Dr.s actually care!! They don't, it's all about the almighty dollar, Research for yourself, because no one else will, take care. Marlee22