Toprol-XL and fatique

I experienced sinus tachycardia with a rate of 236-was started on Toprol XL 25 mg once daily beginning April 2002-these are the side effects I have been having:

Regular episodes of an itchy rash on my neck.
Occasional episodes of chest pain.
Occasional periods of Shortness of breath.
Weight gain of 20 pounds ( have not changed my diet )
Fatique.
Insomnia.
Calf cramps.
**** losing my hair *****
I am going to switch to another drug-
remember if you are taking Toprol-you should be titrated off gradually as stopping this drug abruptly may cause fatal arythmias ****** Read drug insert ******

I have the usual fatique. Weight gain. I take it in combination with Hyzaar for blood pressure control and heart. The dose was recently increased to 50mg once daily. Symptom I'm questioning as possible side effect is frequent nosebleeds. They started about the same time as dose increase, continue every 2 days or so because the membranes seem to be very thin and the arterie starts up again. Cauterized once, didn't help. One nostril. I have plenty of information on nosebleeds and stopping them but the cause eludes me. I'm over 70 and healthy and active. Thank you. Con

On 50mg XL for past year. Experience metalic taste, toe pain, significant weight gain, decrease energy, and fatique. It has decrease number of migraines.