What does iron therapy treat?

Low iron can reduce haemoglobin, the part of red blood cells that carries oxygen. This may contribute to tiredness, reduced stamina, headaches, dizziness or shortness of breath. During pregnancy, increased iron needs can make deficiency more likely, and treatment may be used for anaemia in pregnancy.

Treatment can involve an iron supplement taken by mouth or iron given by infusion. The choice depends on the severity of deficiency, how well you absorb or tolerate tablets, and how quickly replacement is needed. Iron therapy does not treat every cause of tiredness; another condition may need separate assessment.

A clinician can assess your symptoms and blood results before recommending treatment. Take an oral iron supplement exactly as directed, and mention nausea, constipation, abdominal discomfort or dark stools if they become difficult to manage. Do not start or increase iron without advice, because excess iron can be harmful and some anaemias are not caused by iron deficiency.

Keep a record of doses and follow-up tests. Improvement in energy may take time, while replenishing iron stores can require continuing treatment after symptoms ease. Ask whether your supplement should be separated from particular medicines or drinks that affect absorption.

Seek prompt medical help for severe breathlessness, fainting, chest pain, confusion, or bleeding that is heavy or difficult to control. If tiredness, dizziness or breathlessness persists despite treatment, contact your clinician so the diagnosis, dose and possible source of blood loss can be reviewed.

Which blood result shows that I need iron, and how will we check that treatment is working? Would tablets or an infusion suit me better? How can I manage stomach side effects, and should we look for blood loss or another cause of low iron?