Ferrous sulfate — Uses, Dosage, Side Effects & Safety

Drug class: Vitamins & Supplements

Overview

Ferrous sulfate is an iron supplement used to treat or prevent iron deficiency anemia, a condition where your body does not have enough healthy red blood cells due to low iron levels. It is commonly prescribed for people with anemia caused by poor diet, pregnancy, blood loss, or certain medical conditions. Iron is essential for making hemoglobin, the protein in red blood cells that carries oxygen throughout your body. Taking ferrous sulfate helps restore iron levels, improving energy, reducing fatigue, and supporting overall health. Key points: Take ferrous sulfate exactly as directed, usually on an empty stomach for best absorption. Some people may need to take it with food to reduce stomach upset. Do not take more than prescribed, and keep out of reach of children, as iron overdose can be dangerous.

Therapeutic uses

  • Iron deficiency anemia
  • Iron prophylaxis during pregnancy
  • Iron deficiency due to chronic blood loss
  • Restless legs syndrome (off-label)

Common side effects

  • Nausea
  • Constipation
  • Diarrhea
  • Stomach cramps
  • Dark stools
  • Tooth discoloration
  • Iron poisoning (overdose)

Frequently Asked Questions about Ferrous sulfate

What is ferrous sulfate used for?

Ferrous sulfate is used to treat or prevent iron deficiency anemia, a condition where your body lacks enough healthy red blood cells due to low iron levels.

How should I take ferrous sulfate for best absorption?

Take ferrous sulfate on an empty stomach, 1 hour before or 2 hours after meals. If stomach upset occurs, you may take it with food. Avoid taking it with antacids, dairy, tea, or coffee.

What are the common side effects of ferrous sulfate?

Common side effects include stomach upset, constipation, diarrhea, nausea, and dark-colored stools. These are usually mild and temporary.

Can children take ferrous sulfate?

Yes, but only under medical supervision. Dosing is based on age and weight. Accidental overdose in children can be fatal, so keep out of reach.

How long should I take ferrous sulfate?

Continue taking ferrous sulfate until your doctor tells you to stop, usually after your blood tests show normal iron levels. Do not stop early without consulting your doctor.

What should I do if I miss a dose?

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose. Do not double up doses.

What should I do in case of overdose?

Seek emergency medical help immediately. Iron overdose can be life-threatening, especially in children. Symptoms include severe stomach pain, vomiting, diarrhea, and drowsiness.

Related Ferrous sulfate information

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.