A nurse is preparing to administer duloxetine 120 mg PO once daily to a client. Available is duloxetine 40 mg capsules. How many capsules 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.)

Identify the given information: Dose of duloxetine: 120 mg Concentration of duloxetine capsules: 40 mg/capsule Calculate the number of capsules to be administered: Number of capsules = Dose (mg) / Concentration (mg/capsule) Substitute the values: Number of capsules = 120 mg / 40 mg/capsule Number of capsules = 3 capsules