hi, my 16 years old daughter started having schizophrenia from last Nov. She used Risperidone for around 3 months and then she started hearing voice again for 3 times. well, each time only last for around 1 min. Her Doctor advised to change the medicine to Seroquel but he is not sure about the effectiveness of Seroquel. I am quite confused and frustrated. should my daughter change to use Seroquel? Anybody used Seroquel and what's the effectiveness??

sorry about the long post and please give me some ideas about Seroquel. thank you very much.