I have been taking Toprol for about a year for elevated heart rat...

I've been taking Toprol XL ( first 50 mgs ) now up to 100 mgs one time per day. It all began when I had been rushed to the hospital with a heartbeat in the range of 150 to 190 beats per minute. SCARY does not even began to describe what that felt like. It happened 2 times in less than 3 weeks and I was prescribed Tenormin at first. Later on. my doctor thought ToprolXL would be a better drug for me. I have had more anxiety ( and I already suffer from anxiety disorder) been depressed and have had no relief with numerous anti-depressants. Gained weight anf despite working out and eating better have yet to LOSE any signiifcant weight which in turn is making me even more depressed now! I also suffer from clinical depression. What is really upsetting is that just in a phone call. without een checking me over, my doctor increased the dosage to 100mgs! I am very extremely tired now. I barely go out. I have really scary thoughts. Not of suicide but of bad things happening to the people I love the most. Not due to accident but because my mind "wishes" things and I am distraught and have nobody to turn to. Seems as though doctors do not care anymore. I'm at wits end! I had no idea so many people take this medication and there's so many things posted about the dangerous side effects. Including someone who believes that developed Lou Gehrig's disease from taking it? :*( HELP!

PS. I am sorry for the typos in my very first post. I am as you can see for yourselves VERY upset that no severe side effects are talked about by the doctor / patient. That the list of side effects on the pamphlet attached to the bag with TOPROL XL does not list many of the side effects that I've read on message boards in the last hour or so. I want to help myself to have a better quality of life. I want others to have a better quality of life too. But, it seems the major reasons for prescribing TOPROL is for angina and for migraines!?! I am confused as to why other people such as myself ( I know, I had 2 incidents with very very high /rapid heartbeats) are prescribed this medication and why I've been taking this med for so long. I am very VERY pro-active in my own healthcare and of those I love too. But it's exhausting, in many ways to think that there's SO many more things to be worried about, when the doctor prescribes a drug that is supposed to be helping and not hurting someone more :( I am SO fed up and SCARED now. ( advance apologies--- can't think straight anymore ( another 'side effect" I attributed that to peri-menopause) Does anyone in the medical field give a damn about patients ?