"so far the best medication for bipolar disorder i&#039;ve taken.  i started out successfully at 20mg for a year.  then i developed twitching on the left side of my body.  my doctor reduced my dosage to 2 mg a day and put me on artane.   i am glad i found this medicine because i don&#039;t have to take it daily and i no longer feel as if i&#039;m going insane.  helpful, but you really need to pay attention to the way your body handles it. my twitching has gone away thankfully."