A client is ordered ampicillin 0.5 g po every 6 hours. On hand are ampicillin capsules labeled 250mg. How many capsules will the nurse administer for single dose?

Given: Desired dose: Ampicillin 0.5 g PO Available concentration: Ampicillin capsules 250 mg each To find: Number of capsules to administer for a single dose Step 1: Convert desired dose to milligrams We know that 1 gram (g) is equal to 1000 milligrams (mg). Therefore, to convert the desired dose from grams to milligrams, we multiply by 1000: Desired dose (mg) = Desired dose (g) x 1000 Desired dose (mg) = 0.5 g x 1000 = 500 mg Step 2: Calculate the number of capsules To find the number of capsules, we divide the desired dose by the strength of each capsule: Number of capsules = Desired dose / Capsule strength Number of capsules = 500 mg / 250 mg/capsule = 2 capsules