I was reading about the different doses available and found an interesting note. I should not have taken 4 of the 75 mg tabs all at once because they will spike the concentration and that likely caused my slight hypomania. My pdoc did not warn me about that. I need to try divided doses and it may be that 300 is the right dose, in which case I would get the extended release 300s. At 225, I felt kind of flat.