iron supplements

  • Medical and Pharmacy Editor: Omudhome Ogbru, PharmD
    Omudhome Ogbru, PharmD

    Omudhome Ogbru, PharmD

    Dr. Ogbru received his Doctorate in Pharmacy from the University of the Pacific School of Pharmacy in 1995. He completed a Pharmacy Practice Residency at the University of Arizona/University Medical Center in 1996. He was a Professor of Pharmacy Practice and a Regional Clerkship Coordinator for the University of the Pacific School of Pharmacy from 1996-99.

  • Medical and Pharmacy Editor: Charles Patrick Davis, MD, PhD
    Charles Patrick Davis, MD, PhD

    Charles Patrick Davis, MD, PhD

    Dr. Charles "Pat" Davis, MD, PhD, is a board certified Emergency Medicine doctor who currently practices as a consultant and staff member for hospitals. He has a PhD in Microbiology (UT at Austin), and the MD (Univ. Texas Medical Branch, Galveston). He is a Clinical Professor (retired) in the Division of Emergency Medicine, UT Health Science Center at San Antonio, and has been the Chief of Emergency Medicine at UT Medical Branch and at UTHSCSA with over 250 publications.

What brand names are available for iron supplements-oral?

Fer-In-Sol, Slow Fe, Feosol, Feratab and many more

Is iron supplements-oral available as a generic drug?


Do I need a prescription for iron supplements-oral?


What are the uses for iron supplements-oral?

Ferrous sulfate is used for the treatment and prevention of iron-deficiency anemias.

What are the side effects of iron supplements-oral?

The most common side effects associated with ferrous sulfate treatment are:

Less common side effects include:

What is the dosage for iron supplements-oral?

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.

Which drugs or supplements interact with iron supplements-oral?

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.


According to the USDA, there is no difference between a “portion” and a “serving.” See Answer

Is iron supplements-oral safe to take if I'm pregnant or breastfeeding?

Ferrous sulfate crosses the placenta and is safe to use during pregnancy. All pregnant females should be screened for iron deficiency anemia and treated as necessary.

Iron is normally found in breast milk. Ferrous sulfate is secreted into breast milk.

What else should I know about iron supplements-oral?

What preparations of iron supplements-oral are available?

Elixir: 220 mg/5 ml; Solution 75 mg/ml; Syrup: 300 mg/5 ml; Tablets: 325 mg; Delayed release tablets: 324, 325 mg; Extended release tablets: 160, 142 mg.

How should I keep iron supplements-oral stored?

Iron Supplements should be stored at room temperature, 15 C-30 C (59 F-86 F).


Ferrous sulfate (Fer-In-Sol, Slow Fe, Feosol, Feratab) is a supplement used for the treatment of iron deficiency anemias. Side effects, drug interactions, dosage, storage, and safety information should be reviewed prior to taking this supplement.

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Medically Reviewed on 2/28/2019
Medically reviewed by John P. Cunha, DO, FACOEP; Board Certified Emergency Medicine


Ferrous sulphate - Medline