A 7-year-old girl is brought to the emergency department with complaints of abdominal pain, constipation, and difficulty concentrating. Her school performance has been declining, and her teacher has noticed behavioral problems and irritability. The family recently moved into an older home undergoing renovation. Physical examination reveals pallor and a bluish line on the gums. Laboratory findings include an elevated blood lead level (BLL) of 55 µg/dL and microcytic anemia.Which of the following treatments is most appropriate for this patient?
