Well...I have been off Coreg now since the last of November? 2021. I am still feeling the vibrations , shakiness, and inner palpitations. It has calmed way down now..but I am still concerned over my shaking! I've never shaken like this. Both my brothers have Parkinson's. I hope..NOT ME! Oh my! My voice even shakes! I have 4th stage COPD and I can breathe better being off Coreg! I read that people with breathing issues should NEVER be on Coreg. I was on them for 21 years. But Heart problems came first. Breathing problems came later.I go to my heart Doc at the end of January. I will ask why,, after I stopped Coreg...That I shook and I am still shaking! Inside and out! Milder than it was!