47 yr old man is admitted to the hospital after threatening to harm a radio announcer he belives was broadcasting his thoughts. Over the past 20 yrs, he has had multiple psychiatric hospitilizations or threatening people who he believed were plotting against him ,trying to control his mind,causing him to hear voices by implanting devices in his head. Past symptoms improved with neuroleptics ,after discharge ,he discontinued and his symptoms worsened. Which of the following is the most appropriate pharmacotherapy to decrease the pt's risk of future hospitilizations?
e. trifluperazine HCL.