How to Take an Iron Supplement? A Step-by-Step Guide – La Boite à Grains
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How to Take an Iron Supplement? (A Step-by-Step Guide)

by La Boite à Grains 05 Mar 2025
Comment prendre un supplément de fer? (un mode d'emploi)

Why Take Iron Supplements?

Iron supplements are necessary when the body lacks iron, a condition often confirmed by a blood test. Iron is essential for the production of hemoglobin, which carries oxygen in the blood. An iron deficiency can cause fatigue, headaches, and general weakness.

Certain groups, such as pregnant women or those with heavy periods, often benefit from iron supplementation to prevent or treat anemia. The main goal is to restore iron levels, preventing these symptoms and boosting daily energy.

Discover the Best Iron Supplements

When to Take an Iron Supplement?

The timing of iron supplementation depends on individual needs, which vary based on age, gender, and overall health.

  • Children: A child may need an iron supplement in cases of confirmed deficiency, especially during periods of rapid growth when iron requirements increase. The dose should be adjusted based on age and weight under medical supervision.
  • Women of childbearing age: Women are more likely to lack iron, especially due to heavy menstrual periods. A supplement is often recommended to prevent or treat anemia.
  • Pregnant women: During pregnancy, iron needs increase significantly to support fetal development and the expansion of blood volume. Iron supplements are commonly prescribed starting from the second trimester.
  • Adult men: While men generally require less iron, a supplement may be necessary in cases of deficiency due to poor diet or significant blood loss.

The best time to take iron is on an empty stomach, ideally one hour before a meal, to maximize absorption. However, if side effects like stomach discomfort occur, iron can be taken with food.

How to Take an Iron Supplement for Optimal Absorption?

To ensure optimal absorption of an iron supplement, follow these key recommendations:

  • Take iron on an empty stomach: Iron is best absorbed when taken one hour before or two hours after a meal. However, if this causes digestive issues (such as stomach pain), it can be taken with a light meal.
  • Pair it with Vitamin C: Vitamin C significantly enhances the absorption of non-heme iron (found in plants and supplements). It is advisable to consume Vitamin C-rich foods (such as citrus fruits or orange juice) alongside the supplement.
  • Avoid absorption inhibitors: Certain foods and drinks, such as coffee, tea, dairy products, and calcium supplements, reduce iron absorption. It is best to avoid consuming them two hours before or after taking the supplement.
  • Follow the prescribed dosage: Always follow the recommended dosage provided by a health professional to avoid side effects such as nausea or black stools.

By following these practices, you can optimize iron absorption while minimizing potential side effects.

Different Types of Iron Supplements

Here is an overview of the different types of iron supplements, tailored to specific needs and designed for better absorption:

1. Ferrous Sulfate

  • Description: One of the most common forms of iron. Effective but may cause digestive side effects such as nausea or constipation.
  • Recommended Product: Iron 25 mg – Sisu

2. Iron Bisglycinate

  • Description: A better-tolerated form than ferrous sulfate, with fewer digestive issues. Often recommended for sensitive individuals or those with digestive disorders.
  • Recommended Product: Iron+ with Vitamin B Complex – Flora

3. Liquid Iron

  • Description: A great option for those who struggle to swallow tablets. Often easier on digestion and provides better absorption.
  • Recommended Product: 100% Natural Liquid Iron – Spatone

4. Plant-Based Iron

  • Description: Ideal for vegetarians and vegans. Typically combined with Vitamin C to improve absorption.
  • Recommended Product: Garden of Life Plant-Based Iron with Organic Herbs

5. Iron Supplements for Children

These different iron supplement options cater to various needs based on individual preferences and digestive tolerance.

Treatment Duration and Recommended Dosage

The duration of iron supplementation depends on the severity of the deficiency and individual needs. Generally, treatment lasts between 1 and 3 months, until iron levels return to normal.

  • Typical adult dosage: 25 to 50 mg of elemental iron per day.
  • For pregnant women or severe anemia cases: Dosages may be higher, but they should always be adjusted under medical supervision.

It is crucial to follow medical recommendations and not prolong supplementation without professional guidance to avoid iron overload.

Side Effects and Precautions

Iron supplements can cause common side effects, such as constipation, black stools, or stomach pain. To reduce these issues:

  • Gradually increase the dose to allow the body to adjust smoothly.
  • Use mild laxatives if constipation becomes persistent.
  • Opt for well-tolerated iron forms, such as iron bisglycinate, which is known for causing fewer digestive issues.

It is essential not to self-medicate with iron supplements without medical consultation. Excess iron can cause serious complications, including liver or heart damage. A blood test is necessary to diagnose an iron deficiency and determine the appropriate treatment.

Tips to Prevent Iron Deficiency

To avoid iron deficiency and maintain optimal red blood cell levels, follow these tips:

  • Consume heme iron-rich foods (red meat, fish, poultry), which are more easily absorbed than non-heme iron found in legumes, spinach, and whole grains.
  • Pair Vitamin C-rich foods (citrus fruits, bell peppers) with non-heme iron sources to boost absorption. For example, adding lemon juice to lentils enhances iron absorption.
  • Avoid consuming tea, coffee, or dairy products alongside iron-rich foods, as these can reduce iron absorption.
  • Maintain a balanced diet that includes iron sources and whole grains to prevent deficiencies and support overall health.

Conclusion

Taking iron supplements is essential for correcting an iron deficiency and maintaining good health. However, it is crucial to choose high-quality products that suit your specific needs.

At La Boîte à Grains, you’ll find a wide range of iron supplements, including:

  • 100% Natural Liquid Iron – Spatone: A gentle, easily absorbed liquid option, perfect for those who prefer to avoid tablets.
  • Iron+ with Vitamin B Complex – Flora: Designed for maximum absorption, thanks to added B vitamins.
  • Iron 25 mg – Sisu: A vegetarian capsule supplement, ideal for those seeking a simple, effective solution.

For more options, visit La Boîte à Grains and explore our full range of iron supplements available online.

About the author

Naturopaths of La Boite à Grains

Team of licensed and certified naturopaths (ND) in Gatineau, Outaouais.

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