Iron infusions are a widely used, generally well-tolerated method of replenishing depleted iron when the oral form of administration has not worked, or when iron needs to be replenished faster. As with any procedure, infusions can cause certain adverse reactions.
In most cases, side effects are minor and subside spontaneously in 1-2 days. Serious complications are rare, but knowing what to expect is essential. This article talks about normal symptoms of iron infusions, reactions that are rarer, how the risk of side effects is minimised, and when to see your doctor.
If you are thinking about treatment, find out more about iron infusions in Melbourne at Clarendon Medical.
Common Side Effects During or After Iron Infusion
Most patients experience no adverse reactions at all, while others suffer from mild symptoms during infusion or within the first day or two after it.
During the infusion, patients can feel:
- A metallic taste in the mouth
- Sensations of warmth or flushing
- Mild dizziness or light-headedness
- Nausea
Within the first 1-2 days after infusion, there may be:
- Headache
- Fatigue
- Joint or muscle pains
- Flu-like symptoms, including feeling achy and having a slight temperature
- Tenderness or a small bruise at the place of cannula insertion
These reactions are usually temporary and can be managed by taking enough rest, drinking liquids and using pain relief, if prescribed by your doctor. Feeling tired soon after receiving infusion does not necessarily mean that it hasn’t taken effect – usually it takes a couple of days to weeks for patients to become energetic again. More information on recovery after iron infusion is available here.
Skin Staining at the Place of Infusion
One of the rare but important side effects to know about is skin staining. It occurs if a part of the infused iron leaks into the tissues around the cannula insertion point and can lead to brown marks on the skin.
Staining subsides spontaneously or disappears over time in many cases, but sometimes it can become long-lasting or even permanent. That is why if you feel any of the following at the point of insertion during your infusion, you must inform the nurse or doctor immediately:
- Pain or burning
- Swelling
- Unusual discomfort that differs from the initial pain due to a needle
Such a reaction allows stopping infusion timely, which decreases the risk of staining.
Less Common Reactions
Some reactions occur in rare cases but still can require medical intervention:
- Allergic reactions. Serious allergic reactions to modern iron infusions are rare, but they are one of the reasons to carry out the procedure in a clinical setting with constant monitoring. Such reactions include itching, hives, swelling of the face or lips, chest tightness and difficulty breathing.
- Changes in blood pressure. Patients sometimes experience faintness or dizziness caused by decreasing blood pressure during infusion.
- Long-lasting joint or muscle pains. Pain that persists for several days must be reported to your doctor.
Inform your doctor about any previous reactions to iron infusions or any allergies and asthma before treatment.
Decreased Phosphate Levels
Certain preparations can cause decreased phosphate levels in blood. This is usually a minor and temporary condition with no symptoms, but sometimes in some people, especially those who need repeated infusions, low phosphate can lead to fatigue, muscle weakness and bone pain.
Your doctor will take this into account when prescribing a particular preparation and may carry out blood tests in case of need for repeated infusions.
How the Risk of Side Effects Is Minimised
Several factors minimise the risks and side effects of infusions:
- Pre-procedural consultation. Your doctor analyses your blood tests, medical history, medications and reactions to previous treatments to decide whether an infusion is appropriate.
- Careful cannula placement. The cannula is checked before and during the procedure to ensure that it is inserted properly.
- Gradual infusion of the preparation. The preparation is infused slowly over a specific period of time.
- Monitoring. The patient is being observed during infusion and afterwards to manage reactions in a timely manner.
You can read about the procedure of iron infusion and how to prepare for it.
When to Seek Medical Help
During the infusion, inform the nurse or doctor about any pain, burning, swelling at the insertion point or any other symptoms.
Call 000 in case you experience any of the following symptoms after your infusion, which can be signs of a serious allergic reaction:
- Breathing difficulties or wheezing
- Swelling of face, lips, tongue or throat
- Chest tightness
- Fainting or collapsing
Contact your doctor if:
- Adverse reactions such as headache, aches or flu-like symptoms persist for more than a few days or worsen
- You have a fever that does not subside
- You see discolouration of the skin near the point of insertion
- You experience any other symptoms that concern you
FAQs
Q1: Are side effects after iron infusion common?
A1: Most patients have no side effects or only mild ones, such as headache, fatigue or a metallic taste, which usually disappear in 1-2 days.
Q2: How long do side effects after iron infusion last?
A2: Mild side effects usually disappear within 24-48 hours. In case the symptoms persist for more than a couple of days or worsen, inform your doctor.
Q3: Is it normal to feel tired after iron infusion?
A3: Yes. Some patients feel fatigued for a day or two after infusion. Usually, it takes days or weeks for patients to recover and become energetic. Read more about the efficacy of iron infusions and other aspects of this procedure.
Q4: Will skin staining disappear?
A4: In some cases, skin staining fades gradually, but in other ones it is long-lasting or permanent. Informing the nurse about pain or burning at the insertion point of the cannula decreases the risk of this side effect.
Q5: Can I undergo iron infusion if I have allergies?
A5: Possibly. Inform your doctor about your allergies, asthma and previous reactions to iron to decide whether it is safe and necessary to carry out infusions and to take additional measures.
Disclaimer
This article provides general information only and does not replace personalised medical advice. Consult your doctor about your suitability for iron infusions and about your symptoms.
