"just found out after 4 months of using this drug 40mg a day for anxiety that it can cause heart failure in otherwise healthy adults. in low dose this drug will definitely stop the pounding heart beat but i notice if i have a panic attack my heart still races. i&#039;m sure if you took 80mg a day that wouldn&#039;t be a problem though. shortness of breath too after taking, i&#039;d strongly advise against this drug. find something else."