Intravenous Iron Therapy for Anemia of Chronic Disease with Iron Deficiency

Treatment Decision Algorithm

The European Crohn's and Colitis Organisation recommends intravenous iron therapy as first-line treatment in patients with hemoglobin below 10 g/dL 1
The American Gastroenterological Association suggests that intravenous iron should be used in patients with clinically active inflammatory disease 2
Intravenous iron is more effective, shows faster response, and is better tolerated than oral iron in patients with inflammatory conditions, according to the European Crohn's and Colitis Organisation 1
The American Society of Hematology notes that only 21% of early non-responders to oral iron will respond to additional weeks of oral therapy, compared to 65% with intravenous iron 3

The American College of Gastroenterology recommends ferric carboxymaltose as a preferred intravenous iron option, which can be administered as 750-1000 mg per dose 1
The National Institute for Health and Care Excellence suggests that iron sucrose has a maximum individual dose of 200 mg per infusion 3
The European Society for Clinical Nutrition and Metabolism notes that no test dose is required for ferric carboxymaltose, ferric derisomaltose, or iron sucrose 3

The American Society of Hematology expects hemoglobin increase of at least 2 g/dL within 4 weeks of treatment 1
The European Crohn's and Colitis Organisation recommends continuing monitoring iron parameters after treatment 3
The American Gastroenterological Association suggests that re-treatment with intravenous iron should be initiated when serum ferritin drops below 100 μg/L or hemoglobin falls below gender-specific thresholds 2

The American College of Gastroenterology notes that modern intravenous iron formulations have excellent safety profiles with serious adverse reactions occurring in <1% of patients, although the exact percentage is not specified 3
The National Institute for Health and Care Excellence recommends that for mild reactions, slowing the infusion rate is often sufficient 6