Jerry, welcome back! You might want to post as a New Topic so everyone will see it.
I had a heart scare about 6 mos. ago. Started having SOB and rapid heart beat just walking about half a block. I went to a cardiovascular doc at Mayo and he diagnosed it as "deconditioning." Basically not getting enough exercise the past 6 years due to multiple back-to-back major surgeries. He took me off Norvasc for BP and put me on Toprol. That has taken care of the tachycardia, at least. My liver enzyme levels have not been affected by this new med, but all medications act differently and the same med can behave differently in a different person.
Maybe someone else here has had a similar experience as you, so do start a New Topic.