Final Answer:
The prescription, lacking a specified quantity (#CSXX), defaults to the federal regulation for Schedule II medications, indicating a 30-day supply of Morphine 15 mg tablets taken orally every 6 hours. Thus, the correct answer is option a.
Explanation:
The prescription indicates Morphine 15 mg tablets to be taken orally every 6 hours, without specifying the quantity (denoted as #CSXX). To calculate the days' supply, the quantity dispensed must be known. Without that information, the standard assumption is often made for controlled substances: the maximum number of dosage units that can be dispensed under federal law, which is a 30-day supply for Schedule II medications like Morphine (option a). Therefore, given the absence of a specific quantity, the default assumption of a 30-day supply is the most reasonable choice.
This calculation aligns with federal regulations governing the dispensing of controlled substances like Morphine. The lack of a specified quantity on the prescription commonly defaults to the legal maximum supply allowed for such medications. In the absence of explicit instructions on the quantity to dispense, pharmacists adhere to these regulations to ensure compliance with federal law and maintain patient safety.
The notation "#CSXX" in the prescription denotes an unspecified quantity, prompting pharmacists to follow legal guidelines regarding controlled substances. Consequently, the assumption of a 30-day supply is the standard practice when the quantity is not explicitly stated, ensuring compliance with regulations while providing adequate medication for the patient's treatment over a reasonable duration. Therefore, the correct days' supply for this prescription is 30 days.