A nurse is reviewing provider prescriptions for a client who has reduced kidney function. Which of the following prescribed diagnostics should the nurse question?

Rationale for Correct Choices:

• "I should increase green leafy vegetables in my diet.": Green leafy vegetables such as spinach and kale are plant-based sources of non-heme iron, which can help improve iron stores, especially in clients following a vegan diet. Pairing them with vitamin C-rich foods can further enhance iron absorption.
• "The iron supplement might cause my stools to be black.": Black, tarry stools are a common and harmless side effect of oral iron supplements. It results from unabsorbed iron in the gastrointestinal tract and does not indicate gastrointestinal bleeding.
• "I will take my iron supplement 1 hour before a meal.": Iron is best absorbed on an empty stomach, ideally 1 hour before or 2 hours after meals. Taking it before a meal enhances absorption, although food may be added later if gastric irritation occurs.

Rationale for Incorrect Choices:

• "The iron supplement might cause ringing in my ears.": Tinnitus (ringing in the ears) is not a typical or expected side effect of iron supplementation. Its presence may indicate another issue and should be reported rather than expected as normal during iron therapy.
• "I should expect to have swelling in my feet.": Peripheral edema is not associated with iron supplements. Swelling in the feet could suggest cardiac, renal, or vascular issues and should prompt further assessment rather than being anticipated.

Rationale for Correct Choices:

• Increase sources of fiber in the diet: Iron supplements, particularly ferrous sulfate, commonly cause constipation. Increasing dietary fiber through fruits, vegetables, and whole grains helps promote bowel regularity and prevent this common side effect.
• Take the medication on an empty stomach: Iron is best absorbed in an acidic environment, and taking it on an empty stomach enhances its bioavailability. However, if gastrointestinal upset occurs, it may be taken with a small amount of food, but not with calcium-rich foods.
• Take the medication with a source of vitamin C: Vitamin C (ascorbic acid) enhances the absorption of non-heme iron. Consuming iron with a vitamin C-rich beverage or food, like orange juice, increases iron uptake and supports effective treatment of iron deficiency anemia.

Rationale for Incorrect Choices:

• Take an antacid within 30 min after medication administration: Antacids reduce stomach acidity, which impairs iron absorption. Iron requires an acidic environment to be absorbed effectively, so antacids should be avoided within 1–2 hours of iron administration.
• Increase intake of milk and dairy products: Calcium in dairy products can bind to iron and inhibit its absorption. Iron should not be taken with milk or calcium-rich foods to ensure optimal effectiveness of the supplement.