A nurse is assisting in the care of the client who has iron deficiency anemia. Which of the following instructions should the nurse include?

Iron deficiency anemia treatment hinges on maximizing iron absorption. Taking the medication with vitamin C enhances uptake ascorbic acid converts ferric to ferrous iron, boosting bioavailability in the acidic stomach environment, a cornerstone of anemia management. Antacids raise gastric pH, binding iron and reducing absorption, counterproductive to correcting deficiency. Increasing fiber mitigates constipation, a side effect of iron, but isn't the primary administration focus. Milk and dairy, high in calcium, inhibit iron absorption by competing for uptake sites, worsening anemia if paired with supplements. Vitamin C's synergistic effect backed by dietary guidelines optimizes therapy, especially critical with low ferritin (8 ng/mL, Exhibit 1), empowering the client to improve hemoglobin efficiently while minimizing common pitfalls, making it the essential instruction.