iron supplements (cont.)

Medical and Pharmacy Editor:
Medical and Pharmacy Editor:

DOSING: The recommended dietary reference intake (RDA) based on elemental iron is as follows:

  • Individuals 19-50 years : Males 8 mg/day, Females 18 mg/day, Pregnant females 27 mg/day, Breastfeeding females 9 mg/day.
  • Individuals = 50 years: 8 mg/day

For treatment of anemia, the recommended dose expressed as ferrous sulfate is 300 mg every 12 hours and may be increased to 300 mg every 6 hours (regular tablets) or 250 mg daily or every 12 hours (extended release tablets).

The dose for preventing iron deficiency anemia is 300 mg once daily of ferrous sulfate.

DRUG INTERACTIONS: Antacids, H2-antagonists (for example, cimetidine, ranitidine, famotidine, or nizatidine), pancrelipase, and proton pump inhibitors (for example, omeprazole, lansoprazole, raberprazole, pantoprazole, or esomeprazole) may decrease the absorption of iron supplements.

Iron salts may decrease the blood concentration of bisphophonates (for example, aldendronate, etidronate, risedronate, or tiludronate), cefdinir (Omnicef), deferiprone (Ferripox), dolutegravir (Tivicay), eltrombopag (Promacta), levothyroxine (Synthroid), quinolone antibiotics (for example, ciprofloxacin, levofloxacin), and tetracycline antibiotics.

Medically Reviewed by a Doctor on 10/9/2014

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