Several years ago I almost got thrown out of an emergency room after taking a haldol syringe from a doctor and smashing it on the floor. The patient was a frightened 101 years old and needed to be held and hugged. There is rarely a need for Haldol. It is used as a so-called "chemical straightjacket",. Worse, it masks symptoms and makes differential diagnosis of a real problem impossible. The so-called "paramedic" gave you advice above his pay grade.