Iron vitamin pills: what to know

Iron supports haemoglobin production and normal red blood cell function. A shortage can contribute to iron-deficiency anaemia and symptoms such as fatigue, pale skin, cold hands and feet, generalised weakness, or restless legs. Symptoms alone cannot establish the cause. See [Anaemia](/conditions/anaemia/) and [Iron Deficiency Anaemia](/conditions/iron-deficiency-anaemia/) for context.

The amount of iron varies between products. [Oral Iron Salts](/materials/oral-iron-salts/) are medicines or supplements designed to provide iron, while a general multivitamin may contain a different form or amount. Your clinician can match the product to your blood results and situation.

Follow the package or prescription instructions and do not combine several iron-containing products unless a professional has checked the total. Iron can cause nausea, constipation, abdominal discomfort, and darker stools. If these effects interfere with daily life, ask about timing, food, or an alternative product rather than abandoning treatment.

Tea, coffee, calcium, and some medicines may reduce absorption. A pharmacist can help you create a safe schedule. Keep iron away from children, and ask what to do after a missed dose; taking extra to make up for it may be unsafe.

Get urgent help for swelling of the lips or face, trouble breathing, collapse, severe abdominal pain, or suspected accidental ingestion by a child. Arrange medical review for ongoing fatigue, breathlessness, fainting, unusual bleeding, or symptoms that do not improve, because iron deficiency may need investigation and another condition may be involved.

Ask whether you need iron at all, which product and dose suit you, whether your current vitamin already contains iron, and how long to take it. Ask when blood tests should be repeated and which side effects should prompt a call.