A nurse is preparing to administer ibuprofen 0.8 g PO to a client who is postpartum. Available is ibuprofen 200 mg tablets. How many tablets should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.) tablet(s)

Before calculating the number of tablets, a unit conversion is required because the ordered dose is in grams while the available tablets are in milligrams. Convert 0.8 g to mg: 0.8 g × 1000 mg/g = 800 mg. Next, apply the formula: Number of tablets = Desired dose ÷ Dose per tablet = 800 mg ÷ 200 mg/tablet = 4 tablets. Rounding to the nearest whole number, the answer is 4 tablets. Ibuprofen 800 mg is a commonly used dose for postpartum pain management and uterine cramping; it is an NSAID with both analgesic and anti-inflammatory properties. A common mistake is failing to convert grams to milligrams first, which would yield an incorrect calculation of 0.8 ÷ 200 = 0.004 tablets — clearly not clinically reasonable. Another error would be using a different dose-per-tablet if the student misreads the available concentration. The keyed answer of 4 is confirmed correct.