Hi I am a 53 year old female. I have no heart disease that I am aware of. I do take metoprolol 25 mgs daily for a fast heart rate. It usually runs about 90 bpm, so doctor suggested this medicine. But last few nights, as soon as I lay down at night, I can feel and hear my heart beating. Is this normal? I do not have any caffine at night, however I do have wine, and I tend to have sweets. I immediately feel my pulse, and it feels normal and regular, and it doesn't feel fast. But it keeps me up as I can distinctly feel and hear the thumping. Should I be worried? Should I up my metoprolol at night? Thanks for your answer.