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Fer-in-Sol

Generic name: ferrous sulfate

Brand names: Feosol, Fer-In-Sol, FeroSul, Fe-Vite Drops, Infant and Toddler Iron Drops, Slow Fe, Slow Iron, Slow Release Iron, Ferrousal

Last updated November 2, 2026 0 views
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What is Fer-in-Sol?

Fer-in-Sol is a form of iron. You usually get iron from the foods you eat. In your body, iron helps your blood transport oxygen to tissues and organs and aids your muscle cells in storing oxygen.

Fer-in-Sol is used to treat iron deficiency.

Fer-in-Sol may also be used for reasons not mentioned in this medication guide.

This section was rewritten for readability and reviewed for meaning.

How should I take Fer-in-Sol?

Use exactly as directed on the label, or as prescribed by your doctor.

Take on an empty stomach, at least 1 hour before or 2 hours after a meal.

Measure liquid medicine carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

Swallow the tablet whole and do not crush, chew, or break it.

You may need to follow a special diet. Follow all instructions from your doctor or dietitian. Learn about the foods you should eat or avoid.

Store at room temperature, away from moisture and heat.

This section was rewritten for readability and reviewed for meaning.

Warnings

Use only as directed. Inform your doctor if you are taking other medicines, have other medical conditions, or have allergies.

This section was rewritten for readability and reviewed for meaning.

What should I discuss before taking Fer-in-Sol?

Ask a doctor or pharmacist if Fer-in-Sol is safe to use if you have ever had:

  • iron overload syndrome;
  • a red blood cell disorder such as thalassemia; or
  • a condition for which you receive regular blood transfusions.

Ask a doctor before using this medicine if you are pregnant or breastfeeding.

Do not give Fer-in-Sol to a child without medical advice.

This section was rewritten for readability and reviewed for meaning.

Fer-in-Sol side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Fer-in-Sol may cause serious side effects. Call your doctor right away if you have:

  • severe stomach pain or vomiting;
  • cough with bloody mucus or vomit that looks like coffee grounds;
  • fever; or
  • bloody or tarry stools.

Common side effects of Fer-in-Sol may include:

  • diarrhea, constipation;
  • nausea, stomach pain;
  • green-colored stools; or
  • loss of appetite.

This is not a complete list of side effects and others may happen. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

This section was rewritten for readability and reviewed for meaning.

What happens if I miss a dose?

Take the medicine as soon as you can, but skip the missed dose if it is close to the time for your next dose. Do not take two doses at once.

This section was rewritten for readability and reviewed for meaning.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. Get emergency medical help if a child has accidentally swallowed a tablet. An overdose of iron can be fatal to a young child.

Overdose symptoms may include severe vomiting, coughing up blood, bloody diarrhea, urinating less, thirst, dry skin, muscle cramps, dizziness, or fainting.

Avoid taking other iron supplements. Do not take any vitamin or mineral supplements without asking a doctor or pharmacist.

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect Fer-in-Sol?

Take your Fer-in-Sol dose 2 to 6 hours before or after taking any of the following:

  • an antacid;
  • an antibiotic; or
  • a laxative.

This list is not complete. Other drugs may affect Fer-in-Sol, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

This section was rewritten for readability and reviewed for meaning.

Frequently asked questions

  • What is the typical dose of ferrous sulfate?

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Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.