Final answer:
Compazine can be used as an antiemetic to suppress nausea and vomiting.
Step-by-step explanation:
Compazine, when used in smaller doses, can be used as an antiemetic, which means it suppresses nausea and vomiting. It belongs to a class of drugs called phenothiazines, which are widely used in medical practice. These drugs are primarily employed in the management of serious psychiatric illnesses but also have other useful properties such as antiemetic and antihistaminic effects.