i have been on abilify for 2 weeks, 2 mg. my doc wanted to me up my dose to 5 mg last night.. been shaking and tired all day. Had a bipolar breakdown in the first time in two weeks earlier.. It seems the 2 mg works great, but the 5 doesn't.. I am a little person, only weigh 105, and 5'7... anyone else experience this? Also was going to see if it would be okay to just break one of my 5 mg's in half to see how that works for me..Is it safe to break them in half? Thanks in advance.. :)