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Iron & Folic Acid: uses, dose & side effects

Written & medically reviewed by Dr. Sanjay Anbu, MBBS · Last reviewed

Iron and folic acid treat and prevent the most common form of anaemia. They are widely used in pregnancy and for iron-deficiency anaemia, especially in women and growing children.

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Typical dose — general reference only, NOT a prescription

MeasureRange
CategoryOver-the-counter (OTC)
Adult doseAnaemia: ~100 mg elemental iron/day; folic acid often 5 mg/day (as advised)
Child (paediatric) dose3–6 mg/kg/day elemental iron for deficiency — by a doctor

What it is used for

Common brand names

Common side effects

Before taking it — precautions

When to see a doctor urgently

Doses are a general reference, not a prescription. Doses shown are typical adult/paediatric references and vary with age, weight, kidney/liver function and the exact product. Paediatric doses are usually weight-based and must be set by a doctor. MedDroid cannot prescribe — always confirm iron & folic acid and your dose with a doctor or pharmacist and the leaflet inside the pack.

Frequently asked questions

Why are my stools black on iron?

Iron harmlessly darkens the stool — a normal effect. Black, tarry, sticky stools with pain could instead mean bleeding, so mention any concern to your doctor.

How can I absorb iron better?

Take it with a source of vitamin C and away from tea, coffee, milk and calcium, which reduce absorption.

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Sources & further reading

Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.