title: Iron concentration in breast milk normalised within one week of a single high-dose infusion of iron isomaltoside in randomised controlled trial.
abstract: We compared the iron concentration in breast milk after a single high dose of intravenous iron isomaltoside or daily oral iron for postpartum haemorrhage.
  
  
  
  In this randomised controlled trial, the women were allocated a single dose of intravenous 1200 mg iron isomaltoside or oral iron at a mean daily dose of 70.5 mg. We included 65 women with sufficient breast milk three days after inclusion - 30 from the intravenous iron group and 35 from the oral iron group - and collected breast milk and maternal blood samples three days and one week after allocation.
  
  
  
  The mean (±SD) iron concentration in breast milk in the intravenous and oral groups was 0.72 ± 0.27 and 0.40 ± 0.18 mg/L at three days (p < 0.001) and 0.47 ± 0.17 and 0.44 ± 0.25 mg/L after one week (p = 0.64). Baseline samples were not available that soon after birth.
  
  
  
  A single high dose of intravenous iron isomaltoside for postpartum haemorrhage led to a transient increase in the iron concentration in breast milk three days after treatment compared with oral iron. The difference disappeared one week after treatment, and mean iron concentrations were within the normal range in all samples.
authors.affiliation: Department of Obstetrics, Juliane Marie Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.|Pharmacosmos A/S, Holbaek, Denmark.
authors.forename: Charlotte
authors.initials: C
authors.lastname: Holm
authors.affiliation: Pharmacosmos A/S, Holbaek, Denmark.
authors.forename: Lars Lykke
authors.initials: LL
authors.lastname: Thomsen
authors.affiliation: Section for Transfusion Medicine 2034, Capital Region Blood Bank, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
authors.forename: Astrid
authors.initials: A
authors.lastname: Norgaard
authors.affiliation: Department of Obstetrics, Juliane Marie Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.|Pharmacosmos A/S, Holbaek, Denmark.
authors.forename: Veronika
authors.initials: V
authors.lastname: Markova
authors.affiliation: Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark.
authors.forename: Kim F
authors.initials: KF
authors.lastname: Michaelsen
authors.affiliation: Department of Obstetrics, Juliane Marie Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
authors.forename: Jens
authors.initials: J
authors.lastname: Langhoff-Roos
mesh_terms: D000284:Administration, Oral; D000328:Adult; D004187:Disaccharides / Q000008:administration & dosage*; D005260:Female; D005290:Ferric Compounds / Q000008:administration & dosage*; D006801:Humans; D007262:Infusions, Intravenous; D007501:Iron / Q000032:analysis*; D008895:Milk, Human / Q000737:chemistry*; D006473:Postpartum Hemorrhage / Q000188:drug therapy*
chemical_list: D004187:Disaccharides; D005290:Ferric Compounds; C557707:iron isomaltoside 1000; D007501:Iron
keywords: Breast milk composition; Intravenous iron isomaltoside; Lactation; Oral iron; Postpartum haemorrhage; Ferric derisomaltose