Diltiazem
"Was on Atenolol 25mg, once a day, had bad leg cramping, some dizziness, it wasn't helping my palpitations then Cardiologist switched me to Bystolic 5mg I had again dizziness, vivid dreams and feeling fuzzy. Started Diltiazem 30mg 3 times a day as needed and I started with one a day and palpitations and accelerated heart are controlled, I only experienced fatigue, shortness of breath and sometimes nightmares but has helped me feel better though..."