For which prescription should further clarification be obtained regarding the abbreviation "qd"?

The abbreviation "qd" stands for "quaque die," which means "once a day" in Latin. While this abbreviation is commonly used in medical prescriptions, it is essential to be aware that some organizations and regulatory bodies, such as The Joint Commission, discourage the use of "qd" because it can be misinterpreted as "qd," leading to potential medication errors.

In the case of the prescription for Desvenlafaxine 50 mg PO qd, it’s important to clarify this abbreviation to ensure there is no misunderstanding regarding the administration frequency. Clarifying will help prevent any risk of incorrect dosing or adverse effects.

The other prescriptions provided do not contain abbreviations that are similarly ambiguous or prone to misunderstanding. "Every 6 hours PRN" and "PO PRN" are clear in their instructions and do not use problematic abbreviations. Thus, obtaining further clarification is specifically warranted for the prescription that includes "qd."