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What are the side effects of taking iron supplements?

1 doctor weighed in
Dr. Robert Woods
Psychiatry

In brief: Mostly GI Distress

Side effects from taking iron supplements are most often diarrhea or constipation and epigastric abdominal discomfort.
Taken after a meal, side effects decrease, but there is an increased risk of interaction with other substances. Black stools are not uncommon, but harmless. Liquid form can discolor the teeth and intramuscular injections can be painful and leave a brown discoloration.

In brief: Mostly GI Distress

Side effects from taking iron supplements are most often diarrhea or constipation and epigastric abdominal discomfort.
Taken after a meal, side effects decrease, but there is an increased risk of interaction with other substances. Black stools are not uncommon, but harmless. Liquid form can discolor the teeth and intramuscular injections can be painful and leave a brown discoloration.
Dr. Robert Woods
Dr. Robert Woods
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