When administering oral iron supplements to a client with anemia, which nursing action is most important to ensure optimal absorption of the medication?

A. Crushing iron supplements and mixing them with applesauce may make the medication easier to take, but it does not directly improve absorption. In fact, crushing tablets could alter the formulation and absorption, especially if the iron supplement is enteric-coated. B. Administering iron with a glass of milk can actually inhibit absorption because calcium, which is found in milk, can interfere with the absorption of iron. C. While tarry green stools are a common side effect of iron supplements, this is not a reason to discontinue the medication unless instructed by the healthcare provider. D. This is the correct answer. Vitamin C enhances the absorption of iron. Administering the supplement with a vitamin C-rich drink, such as orange juice, helps maximize iron absorption from the gastrointestinal tract.