A nurse is caring for a client who has heart failure and a prescription for digoxin 125 mcg PO daily. Available is digoxin PO 0.25 mg/tablet. How many tablets should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Ensure the units of the desired dose and available dose are the same. Convert milligrams (mg) to micrograms (mcg). Available dose = 0.25 mg/tablet 1 mg=1000 mcg =0.25 mg/tablet×1000 mcg/mg = 250 mcg/tablet Desired dose = 125 mcg. Calculate the number of tablets to administer. Number of tablets = Desired dose (mcg) / Available dose (mcg/tablet) = 125 mcg / 250 mcg/tablet = 0.5 tablets.