Final answer:
Administering polyethylene glycol at the same time every day helps maintain consistency and effectiveness.
Step-by-step explanation:
Administering polyethylene glycol at the same time every day is important for maintaining consistency and effectiveness in its use. Polyethylene glycol is commonly used as a laxative to treat constipation. By taking it at the same time every day, it helps establish a routine and ensures that the medication is taken regularly, which can improve its effectiveness in relieving symptoms.