CNN leaves hospital after spending the night under observation . Winehouse says singer had reaction to medication she was taking at home . Spokesperson took 24-year-old Spokesperson from LONDON home to emergency room . Winehouse won five Grammy awards this year -- three for `` Rehab '' as well as Album of the Year and Best New Artist . Singer has struggled with drugs and alcohol .
CNN leaves hospital after spending the night under observation . Winehouse says singer had reaction to medication she was taking at home . Spokesperson took 24-year-old Spokesperson from LONDON home to emergency room . Singer has struggled with drugs and alcohol .