Specific management Symptomatic treatment is given as needed and includes managing shock and hypoxia, relieving pain and anxiety, and giving sedatives (lorazepam 1 to 2 mg IV as needed) to control seizures, antiemetics (metoclopramide 10 to 20 mg IV every 4 to 6 hours, prochlorperazine 5 to 10 mg IV every 4 to 6 hours, or ondansetron 4 to 8 mg IV every 8 to 12 hours) to control vomiting, and oral antidiarrheal agents (kaolin / pectin 30 to 60 mL with each loose stool or loperamide 4 mg initially, then 2 mg with each loose stool) for diarrhea.