yes my name is Mrs. Davis and i would like to ask you a couple of questions one is metoprolol 10mg xl the same as toprol xl, the doc that i see gave me a script for metoprolol 200mg and cut in half, and another doc gave metoprolol xl 100mg, take one tablet twice a day, but with the first one once a day, which one should i do, I now have the twice a day one now