Magnesium oxide 1200 mg PO daily, to be divided into three equal doses, is prescribed for the client. Each contains 400 mg. How many capsules should the nurse administer with each dose? (Enter numeric value only.)

Calculate the size of each of the three equal doses: Dose per administration (mg) = Total daily dose (mg) / Number of doses per day = 1200 mg / 3 doses = 400 mg Identify the amount of magnesium oxide in each capsule: Amount per capsule = 400 mg Calculate the number of capsules to administer with each dose: Number of capsules per dose = Desired dose per administration (mg) / Amount per capsule (mg/capsule) = 400 mg / 400 mg/capsule = 1 capsule