"i used to take zaleplon sonata to help regulate sleep disturbances related to bipolar disorder. i took it 38 times over the course of 78 days and it was excellent in helping me fall asleep. the 39th time i took it, i experienced very frightening hallucinations and severe anxiety. the experience was made worse because i was concerned about maniac symptoms. i called my psychiatrist and he said to immediately stop taking it. "