I have been on Toprol XL for approximately 2 years. I started out...

I have been on Toprol XL for approximately 2 years. I started out on 25 mg. for palpations and rapid heart. Then the dosage was increased to 50 mg. and now the doctor wants me to take 100 mg. I have freezing hands and feet. My eyes are either so dry or watery so that I cannot hardly see. I have at times terrible shoulder, arm and leg pain. My brain feels likes it's full of goo. I can't think. I am currently wearing a King of Hearts monitor. I have sent approximately 15 transmissions. During the transmissions I can hear my heart speeding up. The technician who takes my transmissions keeps telling me that my heart is beating normally. If that is the case, then I must ask my cardiologist at my next appointment, why am I taking Toprol and spending $35 a month for the medication if my heart is normal? By the way I am NOT increasing my dosage to 100 mg. I will stick with the 50 mg. for now and am considering tapering off even more.