Side Effects of Iron Supplements

Traditional iron supplements often come with adverse gastrointestinal (GI) reactions

Your iron supplement may be causing constipation, loss of appetite, stomach cramps, heartburn, diarrhea, discolored stools, and gas.

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Up to 70% of people taking traditional iron report GI issues

Oral iron supplements break down in the stomach, which is why they can cause discomfort

Many people stop taking oral iron supplements because of side effects like:

  • Constipation 
  • Loss of appetite 
  • Stomach cramps 
  • Nausea
  • Heartburn
  • Diarrhea 
  • Discolored stools 
  • Gas

 


 

Did you know?

  • Oral iron is mainly absorbed in the small intestine. Most traditional iron supplements break down in the stomach before the iron reaches the intestine, which causes 90% of it to go unabsorbed.
  • Unabsorbed iron can cause irritation and damage, contributing to gastrointestinal discomfort.
  • Supplements are not evaluated by the Food and Drug Administration (FDA) and do not require backing by clinical studies.
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You Deserve an Iron You’ll Actually Take

Unlike traditional supplements, ACCRUFeR® (ferric maltol) has a “maltol shield” that keeps the iron protected from the stomach so it can be absorbed in the small intestine. This shield helps minimize the risk of unmanageable GI side effects.

Benefits of ACCRUFeR