A pharmacy technician receives a prescription to dispense VI fl oz of promethazine syrup. What size bottle should the technician use to fill this prescription?

To determine the appropriate size bottle for dispensing VI fl oz (which stands for "six fluid ounces") of promethazine syrup, it is essential to recognize that fluid ounces in the U.S. customary system are a measure of volume.

When considering the volume needed, the technician must select a bottle size that can accommodate the prescribed amount without underfilling it. The label “VI” indicates that the prescription is specifically for six fluid ounces.

Among the bottle sizes given, a 6 oz bottle precisely matches the amount needed for the prescription, allowing for a perfect fill without any excess or waste. Selecting this size also adheres to best practices in pharmacy, ensuring that medications are dispensed in quantities that meet the prescription requirements without unnecessary additional space that might lead to measurement errors.

Using a bottle larger than necessary, such as an 8 oz or 10 oz bottle, is less ideal because it could lead to confusion regarding the volume dispensed or the potential for incorrect dosing if not appropriately noted. The goal in pharmacy practice is to dispense medication in the exact quantity prescribed whenever possible.

Therefore, the technician should use a 6 oz bottle to effectively and accurately fill this prescription for promethazine syrup.