Preparing for iron infusion

Overview

An iron infusion is a procedure where iron is given directly into a vein through a small tube called a drip. It is used to quickly increase iron levels in the blood when oral iron pills are not enough or not suitable. This is often done before surgery to help your body have enough iron to make red blood cells and prevent anaemia.

Iron infusions are becoming more common, especially for people with certain medical conditions or before planned surgery. They are a routine and safe procedure when done by trained healthcare professionals.

People who need iron infusions include those with iron deficiency anaemia due to heavy periods, gastrointestinal bleeding, poor iron absorption, or chronic conditions like kidney disease. It is also used before major surgery to reduce the need for blood transfusions.

Symptoms

Common symptoms

• Fatigue and weakness
• Shortness of breath
• Pale skin
• Dizziness or lightheadedness
• Cold hands and feet
• Brittle nails or hair loss
• Restless legs syndrome

Symptoms in children

• Tiredness and irritability
• Pale complexion
• Poor appetite or pica (craving non-food items like ice or dirt)
• Frequent infections

Symptoms in older adults

• Confusion or memory problems
• Increased shortness of breath on exertion
• Depression or low mood
• Higher risk of falling due to weakness

Causes

Main causes

• Blood loss (e.g., heavy periods, hidden bleeding in the gut from ulcers or polyps)
• Poor absorption of iron from food (e.g., after weight loss surgery or with coeliac disease)
• Not enough iron in diet (e.g., vegetarian or vegan without careful planning)
• Increased need for iron (e.g., pregnancy, growth spurts in children)

Risk factors

• Women with heavy periods
• People who donate blood frequently
• People on long-term medications that cause bleeding
• Those with chronic kidney disease or inflammatory bowel disease
• Older adults with dietary deficiencies or chronic illnesses

When to see a doctor

See a doctor urgently if:

• If you have severe fatigue, chest pain, or trouble breathing
• If you have black, tarry stools or vomit blood (signs of internal bleeding)
• If you have severe allergic reaction symptoms during infusion

Book a routine appointment if:

• If you feel unusually tired, pale, or weak for more than a few weeks
• If you have heavy periods lasting many days
• If you are planning surgery and have been told you have low iron

Diagnosis

Iron deficiency is diagnosed through a blood test that checks your haemoglobin (the protein that carries oxygen) and ferritin (a measure of iron stores). Your doctor will also ask about your symptoms and medical history to find the cause.

Tests that may be done

• Complete blood count (CBC)
• Serum ferritin
• Serum iron and total iron-binding capacity (TIBC)
• Stool test for hidden blood
• Endoscopy or colonoscopy if internal bleeding is suspected

What to expect at your appointment

If your tests show low iron, your doctor may first try oral iron tablets. If tablets don't work or cause side effects, you may be referred for an iron infusion. The infusion is done in a day unit – a needle is placed in your arm, and iron is dripped in slowly. You are monitored during the infusion for any reactions.

Treatment

The main treatment for iron deficiency is to replace iron and treat the underlying cause. For many, oral iron supplements are enough. But when oral iron is not effective, not tolerated, or iron levels need to rise quickly (e.g., before surgery), an iron infusion is a safe alternative. The infusion quickly increases iron stores.

Self-care at home

• Take iron supplements exactly as prescribed, with vitamin C (e.g., orange juice) to help absorption
• Space iron supplements from other medications like antacids (check with pharmacist)
• Eat iron-rich foods: lean red meat, spinach, lentils, beans, and fortified cereals
• Avoid drinking tea or coffee with meals as they can block iron absorption

Medical treatments

Medical treatment includes oral iron tablets or an iron infusion. Your doctor will choose the best type based on your needs. Never take more than recommended – too much iron can be harmful. The infusion is given by a nurse or doctor over 15–60 minutes. Some people may need multiple infusions over weeks. You will have blood tests to check your response.

When is surgery considered?

If you have low iron before surgery, an iron infusion can help build up your iron stores. This reduces the risk of needing a blood transfusion during or after surgery. Your surgeon or anaesthetist will advise if an infusion is needed and when to have it – usually a few weeks before the operation.

Living with this condition

After an iron infusion, you can go home the same day. You might feel a bit tired or have a metallic taste in your mouth – this is normal. Drink plenty of water and eat normally. Avoid heavy lifting or strenuous activity for the rest of the day. Your energy levels should improve over the next few days to weeks.

Lifestyle tips

• Keep follow-up appointments for blood tests
• Take iron supplements if prescribed after the infusion
• Notify your doctor if you have any signs of infection or reaction
• Stay hydrated and eat a balanced diet to support red blood cell production

Diet and exercise

Eat a well-balanced diet with iron-rich foods like red meat, poultry, fish, beans, lentils, tofu, and dark leafy greens. Pair these with vitamin C foods (citrus fruits, bell peppers) to boost absorption. Gentle exercise like walking can help improve circulation and energy levels once you feel better.

Mental health and emotional wellbeing

Living with iron deficiency can cause fatigue, irritability, and low mood. After treatment, many people feel a significant improvement in their energy and mood. If you continue to feel down, talk to your doctor – there may be other factors to address.

Prevention

Some causes of iron deficiency can be prevented. Eating a diet rich in iron and vitamin C, managing heavy periods with your doctor, and treating conditions that cause bleeding early can help. However, some causes like genetic conditions or chronic disease may not be preventable.

Screening programmes

Routine blood tests can catch iron deficiency early. If you have risk factors (e.g., heavy periods, family history of anaemia), ask your doctor about screening.

Complications

If left untreated

• Severe anaemia can lead to heart problems, including an enlarged heart or heart failure
• In pregnancy, untreated anaemia can harm the baby's growth and increase risk of premature birth
• Chronic fatigue can affect work, relationships, and quality of life
• Increased risk of infections due to weakened immune system

Long-term outlook

With proper treatment, iron deficiency anaemia is usually reversible. An iron infusion can quickly bring your iron levels up, often within days to weeks. After that, maintaining a healthy diet and addressing the underlying cause can help keep your iron levels normal. Most people feel much better after treatment – more energy, better concentration, and improved overall health.

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