nausea/vomiting
"I was given a shot of haldol for Gastroparesis related symptoms at the ER. It caused immediate and severe agitation and restlessness. The worst sensation of my life. I wanted to rip my skin off. They gave me Benadryl to try to combat the reaction. It temporarily lessened the symptoms, but took over two days to get out of my system. I will NEVER take this medication again."