Thinking About Iron? Check the Cause of Tiredness First
An iron tablet is not a substitute for finding out why you feel tired.
Symptoms are only a clue
Iron-deficiency anaemia can cause tiredness, breathlessness, palpitations and paler skin. Other conditions can cause similar symptoms. A clinician can arrange blood tests and assess possible blood loss or other causes.
Treat the cause as well
If iron is prescribed, ask how to take it, how long treatment is needed and when blood tests should be repeated. Tell your clinician about side effects instead of quietly stopping treatment.
Store it securely
Keep iron supplements out of children's sight and reach. An overdose can be fatal in a young child. Get emergency medical help after a suspected overdose. Avoid starting high-dose iron simply because a supplement is marketed for energy.
Sources and further reading
Sources checked: 23 October 2026. General health information, not a diagnosis. Seek professional advice for your circumstances.
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