I am currently taking 2.5mg Bystolic, my cardiologist prescribed them to me to help control my heart rate. I was having lots of panic attacks and my pulse would get really high. I am on day 7 of the beta, I do feel a huge difference, a lot less anxiety, all my physical symptoms of anxiety are gone. However, I am noticing some effects of the beta blocker, such as heavy legs, really tired, tightness in chest. Some people are telling me this can't be the beta blocker, and that I should stick out my 30 day regiment. Has anyone experienced this medication for anxiety before? I am debating if I should get off this or not. I like how it keeps my heart pounding/racing down, but now I am worried the effects from the drug could be worse.