Could you list a link to an article about Metoprolol being the worst beta blocker on the market, I simply don't see that. My Cardiologist doesn't prefer it, at least the Succinate Version, but I'm fine on it, succinate and all. The hospital put me on it and my family doctor keeps me on it. But I had taken Inderal LA for years, and when I went into afib was on Acebutolol (rather than Inderal, which later was switched to Atenolol, then switched to Acebutolol, this over a period of many years) in a large dose, but I didn't notice any problems with Metoprolol Succinate, save before they raised the dose high enough. I left the hospital on 200 mg Tartrate, I asked my family doctor to prescribe the Succinate, and technically, my Cardiologist told me to take 400 mg Succinate as 200 mg in the morning, and 200 mg in the evening. But I take, with my family doctors guidance, 200 mg Metoprolol Succinate in the morning, 25 mg Metoprolol Tartrate at 2:00 PM, it gets me through the afternoon more smoothly, and the pharmacy spoke with the doctor, most people don't take most forms. I then take 150 mg Metoprolol Succinate in the evening.