A nurse is preparing to administer amoxicillin 100 mg PO every 8 hr to a toddler who weighs 20 kg. The recommended dosage range is 20 to 25 mg/kg/day. Which of the following actions by the nurse is appropriate?

The nurse determines the prescription is above the recommended dosage range.

The nurse administers the prescribed dosage.

The nurse contacts the pharmacist to adjust the prescribed dosage.

The nurse determines the prescription is insufficient to achieve the desired effect.