Which of the following must be included in a patient's drug therapy record?

A patient's drug therapy record is an essential component of pharmacy practice as it serves to track the medications a patient is taking, ensuring optimal therapeutic outcomes and safety. Including comprehensive information is crucial for pharmacists to provide effective medication management and patient care.

The inclusion of the prescription number is vital as it helps in organizing the patient's records and allows for easy retrieval of information related to specific prescriptions. This assists in tracking medication history and any refills that may occur.

Having the prescriber's information is important for accountability and for communication purposes. It allows pharmacists to contact the prescriber regarding any issues, clarifications, or potential drug interactions related to the patient's therapy, promoting better collaborative care.

The date dispensed is equally important as it indicates when the medication was provided to the patient. This information is essential for monitoring adherence to therapy and recognizing any gaps or overlaps in the medication regimen.

Since all these components contribute significantly to the safe and effective management of a patient's drug therapy, it is necessary that they are all included in a patient's drug therapy record. Therefore, the correct answer encompasses the need for a complete and functional drug therapy record that includes prescription number, prescriber, and date dispensed.