I had a quad bypass done. That is when the Coreg was started, March 8, 2019. It was only 3.125 MG. My BP went to 200/154 in 10 minutes. I had a similar problem with Propranolol after taking it for 20 years with no trouble. I still feel as if I'll die, I can barely walk or talk and sorry but I am quite sure that doctors can KMA. No offence or disrespect intended to you at all. Doctors and I are not on good terms right now.