What is the Difference Between Iron Sucrose and Ferric Carboxymaltose

The main difference between iron sucrose and ferric carboxymaltose is that iron sucrose has a higher iron concentration, which allows for fewer infusions and shorter treatment courses, while ferric carboxymaltose has a lower iron concentration and may require more frequent infusions over a longer treatment duration.

Iron deficiency anemia is a prevalent condition characterized by low levels of red blood cells due to insufficient iron in the body. It affects millions of people worldwide, leading to fatigue, weakness, and impaired physical and cognitive functions. And one of the effective treatments for iron deficiency anemia is intravenous iron supplementation. Iron sucrose and ferric carboxymaltose are two such intravenous iron supplements.

Key Areas Covered

1. What is Iron Sucrose  
      – Definition, Features, Infusions
2. What is Ferric Carboxymaltose
      – Definition, Features, Infusions
3. Similarities Between Iron Sucrose and Ferric Carboxymaltose
      – Outline of Common Features
4. Difference Between Iron Sucrose and Ferric Carboxymaltose
      – Comparison of Key Differences

Key Terms

Ferric Carboxymaltose, Ferinject, Injectafer, Iron Sucrose

Difference Between Iron Sucrose and Ferric Carboxymaltose - Comparison Summary

What is Iron Sucrose

Iron sucrose is an intravenous iron preparation that contains a complex of iron (III) hydroxide and sucrose molecules. It is an effective treatment method for iron deficiency anemia. Each molecule of iron sucrose contains approximately 34% iron. The sucrose acts as a stabilizing agent, helping to prevent iron from precipitating, which ensures that the iron remains in a soluble form suitable for intravenous administration.

Moreover, when iron sucrose is administered intravenously, the iron is released into the bloodstream and transported to the bone marrow, where it is utilized for the synthesis of hemoglobin and other iron-dependent enzymes. By increasing the iron levels in the body, iron sucrose helps improve hemoglobin production and replenishes iron stores, leading to a reversal of iron deficiency anemia.

Compare Iron Sucrose and Ferric Carboxymaltose

Furthermore, in most cases, iron sucrose is given as multiple infusions over several sessions, spaced out over a period of weeks or months. The infusion is usually slow to minimize the risk of adverse reactions and to ensure optimal iron absorption. However,  the dosage and frequency of administration depend on the severity of iron deficiency and the individual patient’s response to treatment.

Numerous clinical studies have demonstrated the efficacy of iron sucrose in treating iron deficiency anemia. It is particularly beneficial for patients who cannot tolerate oral iron supplements or those with severe iron deficiency that requires rapid correction. 

What is Ferric Carboxymaltose

Ferric carboxymaltose (also known by the brand names Injectafer and Ferinject) is an intravenous iron formulation used to treat iron deficiency anemia. It is a complex of iron (III) hydroxide with carboxymaltose molecules. Each molecule of ferric carboxymaltose contains approximately 6% iron.

When ferric carboxymaltose is administered intravenously, the iron is released into the bloodstream and transported to various tissues, including the bone marrow. There, iron is utilized for the synthesis of hemoglobin and other iron-dependent enzymes.

Ferric carboxymaltose is typically administered as an intravenous infusion. One of the advantages of ferric carboxymaltose is that it allows for a more substantial dose to be given in a shorter infusion time, often referred to as “high-dose” or “single-dose” therapy. Generally, in many cases, a full iron replacement dose can be administered in just one or two infusions.

Ferric carboxymaltose is indicated for the treatment of iron deficiency anemia when oral iron supplementation is inadequate or not tolerated. It is particularly useful for patients with severe iron deficiency or those who cannot tolerate oral iron due to gastrointestinal side effects or other reasons.

Similarities Between Iron Sucrose and Ferric Carboxymaltose

  • Both iron sucrose and ferric carboxymaltose are indicated for the treatment of iron deficiency anemia when oral iron supplementation is inadequate or not tolerated.
  • They help to replenish iron stores and improve hemoglobin levels in patients with iron deficiency.
  • Moreover, both formulations are administered intravenously. They are generally given as slow infusions by healthcare professionals to ensure proper absorption and reduce the risk of adverse reactions.
  • They work by releasing iron into the bloodstream, which is then transported to the bone marrow and other tissues, where it is utilized for the synthesis of hemoglobin and other iron-dependent enzymes. This leads to an improvement in hemoglobin levels and a reversal of iron deficiency anemia.
  • Both iron sucrose and ferric carboxymaltose have been shown to be effective in treating iron deficiency anemia.

Difference Between Iron Sucrose and Ferric Carboxymaltose

Definition

Iron sucrose is a complex of iron (III) hydroxide with sucrose molecules and contains approximately 34% iron, whereas ferric carboxymaltose is a complex of iron (III) hydroxide with carboxymaltose molecules and contains approximately 6% iron.

Iron Concentration

Moreover, iron sucrose has a higher iron concentration, which allows for fewer infusions and shorter treatment courses. On the other hand, ferric carboxymaltose has a lower iron concentration and may require more frequent infusions over a longer treatment duration.

Infusion

Iron sucrose is usually administered as a slow intravenous infusion, taking 1 to 2 hours per session, but ferric carboxymaltose can be administered more rapidly, sometimes in as little as 15 minutes for the total dose.

Conclusion

In brief, iron sucrose has a higher iron concentration, which allows for fewer infusions and shorter treatment courses. In contrast, ferric carboxymaltose has a lower iron concentration and may require more frequent infusions over a longer treatment duration. Thus, this is the main difference between iron sucrose and ferric carboxymaltose.

Reference:

1. “Iron Sucrose Intravenous: Uses, Side Effects, Interactions, Pictures, Warnings & Dosing.” WebMD.
2. “Ferric carboxymaltose Uses, Side Effects & Warnings.” Drugs.com

Image Courtesy:

1. “Iron Sucrose Structure” By Rauscha – Own work (CC BY-SA 4.0) via Commons Wikimedia

About the Author: Hasini A

Hasini is a graduate of Applied Science with a strong background in forestry, environmental science, chemistry, and management science. She is an amateur photographer with a keen interest in exploring the wonders of nature and science.

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