You do not have to take a drug that you perceive to be harmful. No one can force you to take the Haldol. You have rights, and you need to make sure that professionals respect your rights. Did you have a discussion with this doc about the medications that have been successful in the past? Does your doctor listen to you? If he cannot look you in the eye when you are in session, it may be a big clue to seek out another doctor. Call a patient rights advocate for help with this.