To avoid cross-contamination, a pharmacy technician should clean the counting tray after filling a prescription for which of the following medications?

Warfarin is an anticoagulant that is also critical in medication safety; however, it does not have the same level of concern regarding cross-contamination as fluoxetine. While it is important to avoid cross-contamination with any medication, the specific need for cleaning the tray is heightened with fluoxetine due to its unique handling requirements.

Losartan is an antihypertensive medication and, like warfarin, should be handled with care. However, it does not carry the same risk of cross-contamination as fluoxetine. The typical handling protocols for losartan do not necessitate additional cleaning measures beyond standard practices.

Sulfamethoxazole/trimethoprim is an antibiotic combination that may require caution due to potential allergic reactions. Nevertheless, it does not require the same stringent cleaning protocols as fluoxetine after filling a prescription, making it less critical for avoiding cross-contamination.