Final answer:
When a pharmacy accepts a return, it is important to handle the medication properly to ensure public safety and minimize environmental pollution.
Step-by-step explanation:
When a pharmacy accepts a return, the medication must be handled properly to ensure public safety and minimize environmental pollution. It is important to follow specific procedures for the disposal of unused or expired medications. In many European countries, take-back systems are in place for such residues, while in the US, voluntary initiatives on a local basis exist. In Germany, investigations have shown that a significant percentage of liquid pharmaceuticals and tablets or ointments are disposed of improperly, such as via the toilet or sink.