For the prescription: Prozac 20 mg #30 qd NR, how many refills are allowed?

In this case, the prescription specifies "qd" which means "once daily," and "NR" stands for "no refills." This notation indicates that the prescriber has instructed that there should be no refills allowed for this medication. It is common for certain prescriptions, particularly those for controlled substances or certain mental health medications, to limit refills due to the need for ongoing monitoring of the patient's condition and response to treatment.

By stating no refills, the healthcare provider is ensuring that the patient must return for further evaluation before obtaining additional medication, which is crucial for managing medications that may require adjustments or monitoring for side effects. Therefore, the correct interpretation of "NR" in this prescription is that it indicates a total of zero refills are permitted.