Oral or IV Iron When Heavy Periods Have Caused Anemia?

When heavy periods leave you tired between cycles, an iron prescription may be only one part of the conversation you need. Ask how the clinician will follow the anemia and what is being done about the bleeding. Keep those two plans together.

What oral iron involves

Tablets are commonly used to replace missing iron. They can cause constipation, diarrhea, stomach discomfort or nausea. Tell the prescriber if these effects make the routine hard to follow.¹

The AGA’s 2024 expert review advises oral iron no more than once daily and notes that every-other-day dosing may be better tolerated for some people. Ask whether your prescribed schedule should change; do not choose a new dose yourself.²

When IV iron is discussed

The same expert review recommends intravenous iron when oral iron is not tolerated, iron stores fail to improve with a trial, or a condition makes oral absorption unlikely. This advice concerns iron-deficiency anemia generally, rather than a direct comparison limited to heavy periods.²

Infusion reactions can occur. Ask about the product proposed, how it will be given and the service’s safety instructions.²

Agree on the review

NHS¹ guidance describes repeat blood tests to check response and treatment for heavy periods. Ask when your next tests are due and who will review both the results and ongoing bleeding.¹

Bring the name of the iron product you tried and a description of any difficulty taking it. If an infusion is proposed, ask what appointment arrangements you need before organizing work or transport.

Period, Handled includes a Period Scorecard. Use it to organize bleeding observations for that review. See the book.