Which of the following is a responsibility that must be completed by a pharmacist?

Performing drug utilization review (DUR) is a crucial responsibility that must be completed by a pharmacist. DUR involves evaluating a patient's medication therapy to ensure that the prescriptions are appropriate, safe, and effective, considering the patient's medical history, current medications, and potential drug interactions. This process is essential for identifying any issues that may arise from a patient's medication regimen, facilitating better patient outcomes and promoting the safe use of pharmaceuticals.

Engaging in DUR is a core function of a pharmacist's role in patient care and medication management. It helps pharmacists identify potential therapeutic problems and provides an opportunity to counsel patients and collaborate with prescribers to enhance medication adherence and safety. By conducting this review, pharmacists contribute significantly to the overall healthcare team, ensuring optimal therapeutic outcomes for patients.

In contrast, while administering vaccines may fall under a pharmacist's scope of practice, it often requires specific training and may not be performed independently in all contexts. Documenting patient medical histories, while important, is typically a broader function of the healthcare team and may not always be solely the responsibility of the pharmacist. Refilling prescriptions automatically can depend on the policies of the pharmacy and may not involve pharmacist interaction unless there are concerns about the patient's therapy. Therefore, performing DUR stands out as an essential and