My PCP a Cardiologist wanted me to take Carvidelol because he said it was a good heart med. In a couple of weeks I started having terrible nightmares and feeling horrible trtying to sleep so my doc said lets test it so I stopped that med for a couple of months and no more bad nightmares and my wife moved back in bed with me, Then my Doc said he wanted me to try Carvedilol again and I did and in a week my sleep was disturbed and terrible nightmates etc etc returned. And my spouse left me again! No more carvediliol for me. and she finally came back!