What are some good medications for palpitations from pvc's and pac's? took metoprolol but gained weight, just started atenolol. don't wanna gain more

Give it a try: If you do gain weight then consider other options. It is not that common to gain weight on beta blockers and can usually be avoided if you watch your food intake. If your irregular heartbeat is so bothersome that you take medication you may want to consider ablation. It is ussually such a benign condition that no medications are necessary. Make sure it is not your anxiety that you are treating