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Tuesday 03 November 2026
Âé¶¹¹ú²ú Foundation Trust

Iron Infusion- Intravenous Iron

FerinjectÌý(ferricÌýcarboxymaltose) is special type ofÌýliquidÌýiron given through aÌýcannulaÌýinto a vein (also known as an ‘infusion’).ÌýFerinjectÌýis sometimes used instead of iron tabletsÌýor if the oral tablets have not had the desired effectÌýduring your pregnancy or after your baby has been born.ÌýFerinjectÌýis usually given over two infusion one week apart to help improve your iron levels.ÌýÌý

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This will be given in our Day Assessment Unit; your midwife will put a cannula (small tube in your vein) and give a flush of fluid down this. They will then start theÌýFerinjectÌýinfusion which usually takes around 15 minutes. You will need to remain for around 30 minutes post your infusion to ensure you feel well and then return for your 2ndÌýinfusion.ÌýYou will be given a booked time to arriveÌýatÌýthe unit however based on DAU activity we ask that you allow around 1-2 hours for this appointment.ÌýÌýÌýÌý

If you have low iron thatÌýremainsÌýuntreated then it can lead to several of these side effects:ÌýÌý

  • shortness of breathÌý â—� IrritabilityÌýÌý
  • feeling tired/ Lack of energy â—� Poor concentrationÌý
  • dizzinessÌýÌý

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The reasons we would offer this infusion is:ÌýÌý

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  • Blood tests show you are anaemic and oral iron tablets have not improved your iron levels or have made you feel unwell. Iron deficiency anaemia can occur when your body is not getting enough iron and cannot produce enough red blood cells. It is common for women who are pregnant or who have just given birth to have iron deficiency anaemia.

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  • You had a significant blood loss after the birth of your baby (causing your iron levels to be low), but otherwise you are feeling well.

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  • You have decided not to have a blood transfusionandFerinjectÌýmay be offered to you as an alternative to a blood transfusion. Although blood transfusions are safe, there are some risks associated with them, including aÌýsmallÌýrisk of infection.ÌýFerinjectÌýis not a blood product, so it does not have the associated risks of a blood transfusion. Your midwife or obstetrician will discuss your options with you.Ìý

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Possible Side effects:ÌýÌý

FerinjectÌýis considered safe to use after the first 3 months of pregnancyÌýand very rarely causes allergic reactions. Throughout your infusion you will beÌýmonitoredÌýby a member of staff and will be asked to report any concernsÌýyouÌýhave throughout the durationÌýof this.ÌýÌý

A rare but significantÌýpossible complicationÌýis permanent skin staining or discolouring around the cannula site orÌýpossibly extendingÌýfurther up the arm. This occurs if there is leakage of the ironÌýoutside your vein. We reduce the risk of this occurring by ensuring the flush of fluid before the infusion begins goes in smoothly.ÌýÌý

OtherÌýpossible sideÌýeffects include:ÌýÌý

  • HeadacheÌý â—� DizzinessÌý
  • Nausea and vomitingÌý â—� RashÌýÌý
  • DiarrhoeaÌý â—� ConstipationÌý
  • Abnormal Liver functionÌý â—� FlushingÌýÌý
  • Abdominal painÌý ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýâ—� Muscle crampsÌýÌý
  • Low or high blood pressure â—� Injection site reactionsÌý

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Are there any alternativesÌýto intravenous iron?ÌýÌý

As you are requiring intravenous iron it is likely that your doctor has decided oral iron tablets are not effective or you may not be able to tolerate them. If you decide that you do not wish to have intravenousÌýironÌýyou may require a blood transfusion to correct your anaemia when your baby is born. Blood transfusions are associated with some short- and long-term side effects/ risks. Please discuss this with your doctor or midwife if you do not wish to have the infusion.ÌýÌý

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What happens next?ÌýÌý

Your full blood count (blood test) will be offered after 14 days to ensure that the treatment has had the desired effect on your iron levels. We can prescribe up to 3 infusions following discussions with the obstetric team.ÌýÌý

If you are taking Iron tablets orally then please stop these for 5 days following your infusion and the midwives on the Day assessment unit will follow up your blood result. They will contact you via the telephone to discuss further actions if any areÌýrequired.ÌýÌý

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Note. This document uses the term women throughout, but this term should be taken to also include people who doÌýnotÌý identifyÌýasÌýwomenÌýbut who are pregnant, in labour and in the postnatal period.ÌýÌý

Our Maternity Information Leaflets for parents and service users are reviewed regularly by parents and service users. If you have any comments/feedback about this leaflet or are interested in looking at future leaflets, please contact our Maternity & Neonatal Voices Partnership (MNVP) Ìý Ìý

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Âé¶¹¹ú²ú NHS Foundation Trust, Âé¶¹¹ú²ú District Hospital, Âé¶¹¹ú²ú, Wiltshire, SP2 8BJÌý

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