Toprol-XL and nephews

I am 49 years old and have been in great health until about 6 months ago due to some stressful situations with one of my nephews. My blood pressure was 140/80 at the highest. At this time...I began to have some mild heart palpitations and was put on Toprol XL (50 mg.) suddenly my palpitations became more intense and occurred more often. Then I began to have panic attacks and vision and memory problems. My doctor then prescribed Xanax .25mg. for the panic attacks. I weaned myself off of the 50 and began to take .25 mg. I really wanted off of it so I tried to cut that in half for several weeks. After about a month...I went off of the medicine for several days and began to have some strange symptoms. My arms were tingling and numb, I woke up sweating, my head felt strange...so I went back on the Toprol (25 mg.). I really would like to get off of all of this medicine. I have never been one to take anything and I am far worse than I ever was. I just wonder if doctors read this information and if the drug company takes note of any of this. I think this is a very strong drug that is over prescribed. I worry that I have damaged my heart with this drug. I am just not sure what to do. Please help...