1Take iron with milk and the antacid because calcium increases absorption; report any dark stool as bleeding.
2Take iron on an empty stomach if tolerated, separate it from calcium and antacids by at least 2 hours, and expect dark stools.✓ Correct answer
3Crush the tablet into bran cereal because fiber improves absorption and prevents gastrointestinal irritation.
4Stop iron when hemoglobin first normalizes because treatment after that point offers no benefit.
Explanation
Oral iron is absorbed best on an empty stomach, although a small amount of food can be used if gastrointestinal symptoms occur. Calcium, milk, antacids, and high-fiber foods reduce absorption and should be separated from iron; a 2-hour interval is commonly advised. Vitamin C can improve absorption. Dark stools are expected, while tarry stools, red streaks, or significant abdominal pain require evaluation. Therapy often continues after hemoglobin normalizes to replenish stores under prescriber guidance.
Clinical reasoning Iron absorption is reduced by calcium, antacids, and some foods. Darkening of stool reflects unabsorbed iron and is expected, but melena has a tarry appearance and clinical context.
Decision rule Give oral iron apart from absorption blockers, use an empty stomach when tolerated, and teach the difference between expected dark stool and signs of bleeding.
Scenario A client with iron-deficiency anemia is starting oral ferrous sulfate and takes a calcium-containing antacid each morning.
Ferrous sulfate — An oral iron salt used to replace iron and restore hemoglobin and iron stores.
Iron absorption interaction — Reduced iron uptake when the supplement is taken with calcium, antacids, high-fiber foods, or certain medications.
Iron supplementation — Treat IDA; expect reticulocyte rise in 1 week, Hgb increase in 2-4 weeks; continue 3-6 months after Hgb normalizes.