1 What is Feosol?

Brand: Feosol, Fer-In-Sol, Slow-Fe

Generic: Ferrous Fumarate, Ferrous Gluconate, Ferrous Sulfate

Feosol is a drug used in the treatment of iron deficiency anemia. It is usually available in the tablet, capsule or in the syrup form.


You should read the product information leaflet before using this medication. If you have any questions, ask your doctor or pharmacist.

This medication should be taken by mouth as instructed by your doctor. Do not crush or chew the drug because it may diminish its effects. This medication should be taken with a full glass of water unless your doctor tells you otherwise. You should swallow the drug whole.

Your dosage is based on your medical condition and the way you will respond to treatment. Take this drug regularly to experience the most benefits. You should also take this drug at the same time each day.

If you miss a dose, use it as soon as you remember. Continue to use it as prescribed by your doctor or as stated on the package label.


Ferrous fumarate may interact with medications such as:

  • Certain antibiotics such as penicillamine, chloramphenicol, or quinolones such as ciprofloxacin or norfloxacin
  • Bisphosphonates such as alendronate
  • Levodopa
  • Methyldopa
  • Thyroid replacement drugs such as levothyroxine
  • Aantacids or tetracycline antibiotics
  • Hydantoins such as phenytoin

Side Effects

There are no side effects known aside from a possible allergic reaction in people who have previous or unknown hypersensitivity to the drug.

Watch out for signs of allergic reactions such as:

  • Rash
  • Itching
  • Swelling


Before taking this medication, tell your doctor or pharmacist if you have the following:

  • Allergy to ferrous fumarate or other iron preparations
  • Iron overload disorder such as hemochromatosis or hemosiderosis
  • Use or abuse of alcohol
  • Liver problems
  • Gastrointestinal problems
  • Vitamin B12 deficiency or pernicious anemia
  • Pregnancy or lactation

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