A nurse is preparing to administer diclofenac sodium 200 mg PO daily in equally divided doses every 6 hr. How many mg should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Calculation: Identify the total daily dose. Total daily dose = 200 mg. Determine the frequency of doses per day. Doses per day = 24 hours / 6 hours/dose = 4 doses. Calculate the dose per administration. Dose per administration = Total daily dose / Doses per day = 200 mg / 4 doses = 50 mg. Rounded to the nearest whole number: 50.