I was struggling with side effects from Cardiezem and asked to have my medicine changed, so I was put on 50
mg Metroprolol
Tartrate per day, but began to suffer some nasty side effects--headaches, dizziness, nausea, abdominal cramps, lucid dreams, runny nose, and my heart rate dropped from 75-85 bpm to 45 to 55 bpm's depending on what I was doing. When I would sleep it dropped into the low 40's, and I couldn't focus at work, couldn't exercise.