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Ferrous sulfate

Brand: Feosol

Iron supplementUsed for: Iron-deficiency anemia (causes dark stools)Other High-Yield
Key warning

Caution: accidental iron overdose is a leading cause of fatal poisoning in children under 6

Common side effects

  • Constipation
  • Dark stools
  • Nausea
  • Stomach upset

Key interactions & cautions

  • Separate from antacids, dairy, and calcium
  • Reduces absorption of some antibiotics
  • Vitamin C improves absorption

Counseling points

  • Take on an empty stomach if tolerated
  • Dark stools are expected and harmless
  • Keep away from children
  • Take with water or juice, not milk
  • Increase fiber and fluids for constipation
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High-yield study aid for exam prep — not a substitute for the package insert or a pharmacist’s dispensing reference.