Which of the following situations requires a DUR by a pharmacist?

While a patient may request a specific brand name, this situation does not inherently require a DUR. The request itself does not indicate any potential drug interactions, duplications, or safety concerns that would necessitate a review by the pharmacist.

The prescription of a brand name medication by a physician does not automatically trigger the need for a DUR. This action is common practice and does not imply any issues with the patient's medication regimen that would need to be evaluated for safety or effectiveness.

Identifying a look-alike or sound-alike medication is important for preventing medication errors; however, it does not necessarily require a DUR unless there is a specific concern regarding the patient's therapy. The pharmacist may need to take precautions, but this situation alone does not demand a comprehensive review of the patient’s medication history.