A nurse is preparing to administer lisinopril 2.5 mg PO to an older adult client. Available is lisinopril 5 mg tablets. How many tablets should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Calculation: Identify the prescribed dose and available tablet strength Ordered Dose: 2.5 mg Tablet Strength: 5 mg per tablet Calculate the number of tablets to administer Number of Tablets = Ordered Dose ÷ Tablet Strength Number of Tablets = 2.5 ÷ 5 = 0.5