Toprol-XL and pacemaker

very interesting as I read the above side effects people have experienced. I was put on toprol - l00mg two years ago. I have always been a healthy female = only going to the Dr. for yearly check-ups. Never having the flu, colds, and always low blood pressure. I was exposed to a chemical that immediately increased my blood pressure. Had a clean bill of Health with low blood pressure two weeks prior. I was put on Tropol 50 mg and then l00 mg. I had dizziness, tired, etc. but never related it to the possibility of the medicine and neither did my doctor. I was sent for tests for the dizziness and ended up with a pace maker. After reading the above side effects people have written in about - I wonder what actually created my problems. I always have dry mouth and dry eyes, which I never had before. The reason for pacemaker is if I should go into a faint spell it will kick in and not allow me to faint as I had three episodes of fainting. I also was given every test imaginable prior to the pacemaker. My heart and arteries are fine, cat scans, my heart beats are fine, all arteries flow properly. I now wonder about the medication.