Did you ever get the two types of Metoprolol
straightened out? The two are similar in weight vs
. strength, but I thought that the Succinate was only taken once a day. The Tartrate is much cheaper of the two. I also take 50mg/2X a day of this. MVP would affect blood flow, but I doubt it would have an affect on rate. Of course, the last time I checked, there was no "M.D." after my name, so it's just a guess. Keep us informed of what you find.