Church bell ringing symptoms and conditions

I have been on Lisinopril 20 mg since
February. After a few weeks I kept waking up every morning around 5 am and felt my heartbeat all over the place, like I just had run a marathon. After 4 weeks, this subsided. Then I started hearing weird sounds in my head like a church bell ringing in the distance, this was going on along with waking up for the past two weeks every morning at 4 am with a rapid heart beat, a creepy sensation going up my arms and legs and getting cold. On top of that I was getting very anxious and shaky. My doctor seems to think I suffer from anxiety attacks and put me on Zoloft. I also start getting out of breath just bending down, tieing my shoes and I feel tired and shaky all the time. In the beginning I had the cough, that has subsided but I seem to develop all these other side effects. After reading all these emails, I will stop my medication tomorrow and see what happens. I might try the apple cider vinegar approach. By the way, my blood pressure went down to 92 to 55 most of the time and my doctors thought, that was great! I was under the impression the bp to shoot for was 120 over 80.