De beste IJzer tabletten? Hier moet je op letten

The best iron tablets? Here's what to look for.

Geschreven door: Ebrina van der Bijl

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Gepubliceerd op:

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Leesduur: 7 min

The best way to replenish an iron deficiency is through diet. But sometimes that's not possible. Iron supplements can offer a solution and help you get your iron levels back up to normal.

The possibilities are endless. That's why I'm happy to help you find the best iron pills and explain what to look for.

The best iron supplements contain iron bisglycinate for optimal absorption and are gentle on the stomach, often combined with vitamin C for better absorption.

Avoid iron-rich supplements above 45 mg per dose to prevent side effects such as nausea, abdominal pain, and diarrhea.

Iron absorption can be increased by vitamin C and decreased by calcium, phytic acid and polyphenols from tea and coffee.

How do you recognize the best iron tablets?

You can recognize good, high-quality iron tablets by the following criteria.

The supplement contains:

  • Organically bound iron – such as iron bisglycinate from a reputable manufacturer. This is the most absorbable form of iron in dietary supplements.
  • Sufficient iron per dose - The Iron supplement contains at least 11 mg of iron per dose, but not more than 45 mg.
  • Extra vitamin C for increased absorption - Vitamin C (preferably from a natural source) increases the absorption of iron from food.

There are several other factors I'd recommend considering when choosing a suitable iron supplement. These vary from person to person, so take what you see fit.

  • Free from artificial additives - It's better for your body to choose a supplement with only natural additives. This is also called a clean-label supplement.
  • Capsules instead of tablets - Capsules are easier to swallow. Personally, I find supplements in capsules much easier to use.

To help you optimally, I have created a top 3 of iron supplements that I recommend based on these criteria.

The top 3 best iron pills

#1. Iron Premium - Natural Performance

Iron Premium is a plant-based iron supplement from Natuurlijk Presteren. It contains a patented form of iron from Ferrochel® and vitamin C and rosehip to enhance absorption.

This iron supplement is ranked #1 because it contains the best available plant-based form of iron and absorption is enhanced by vitamin C from rosehip extract.

Finally, this product comes in an easy-to-swallow capsule and is clean-label produced, meaning it only contains natural additives.

#2. Iron 25 mg - Vitals

Iron 25 mg is an iron supplement from Vitals. It also contains a patented form of iron from Ferrochel® and is safely dosed.

The benefits:

  • Contains patented Ferrochel® Iron Bisglycinate (best in the world).
  • Contains vitamin C from rosehip extract for extra good absorption.

The disadvantage

  • Contains a synthetic form of vitamin C.

This product is available at bol.com, among others.

This iron supplement is the next best thing to Iron Premium from Natural Performance. The only drawback to this product is that it uses a synthetic form of vitamin C.

#3. Iron Bisglycinate - Vitakruid

Iron Premium is an iron supplement from the Vitakruid brand. It contains a highly absorbable form of iron (bisglycinate), is highly dosed, and includes vitamins C and A.

The benefits:

  • Contains Iron Bisglycinate, a well-absorbable form of Iron
  • Contains vitamin C and other substances for optimal functioning of iron.

Disadvantages

  • Does not contain a patented form of Iron, but a non-branded variant.
  • They are tablets, which are difficult for some to swallow.

This product is available at bol.com, among others.

This Iron supplement is in third place because while it is a nice product, it does not contain a patented form of Iron.

After all, they are tablets, which are difficult for some to swallow.

What is easily absorbable iron?

Iron bisglycinate is the best choice if you're looking for an iron supplement that's well-absorbed and gentle on your stomach. It's an organically bound form of iron, meaning it's easily absorbed by your body.

Other organically bound forms, such as iron fumarate and iron citrate , also work effectively, but may be more likely to cause side effects.

Ultimately, it's best to get heme iron from your diet. However, heme iron isn't used in plant-based iron supplements.

Therefore, within the non-heme iron category, the organically bound forms such as iron bisglycinate and iron citrate are the best choice. These are better absorbed than inorganic forms and are gentler on the stomach.

Examples of organically bound non-heme iron are:

  • Iron bisglycinate
  • Iron citrate
  • Iron fumarate
  • Iron lactate
  • Iron gluconate
  • Iron picolinate

How much iron per dose is enough?

The best iron pills contain at least the recommended daily amount:

  • 14 mg per day – for women aged 18 years and over (until menopause) and pregnant women
  • 11 mg per day – for postmenopausal women and boys and men aged 9 years and older

You'll want to avoid iron tablets containing more than 45 mg per dose . If you take more than this amount, you may experience nausea, vomiting, and diarrhea.

If you're prone to iron deficiency, we recommend taking a daily iron supplement in addition to your diet. Your body only absorbs about 10% of non-heme iron from food. (1)

Note: Have your iron levels checked before taking iron pills. Too much iron can be harmful and lead to iron overload (hemochromatosis). This condition causes iron to accumulate in organs like the liver, heart, and pancreas, which can cause serious health problems such as liver damage, diabetes, and heart disease.

Additives that improve iron absorption

Exactly how much iron your body absorbs depends on other nutrients you eat.
Some substances inhibit absorption, while other substances help to absorb more iron.

Additives that contribute to the absorption and functioning of iron are:

  • Vitamin C - converts non-heme iron (in supplements and plant foods) into a more absorbable form. (2)
  • Vitamin A – for maintaining good iron levels in the blood
  • Vitamin B2 - promotes the availability of iron from body stores
  • Copper – supports iron transport in the body
  • Vitamin B12 - is important for the formation of red blood cells

The most important thing to improve iron absorption is vitamin C.

It's best to avoid taking your iron pills with the following foods, as they contain substances that can make your iron tablets less effective:

  1. Dairy products (calcium)
  2. Grains and legumes (phytic acid)
  3. Tea and coffee (polyphenols)

How do you know if iron pills are easy to swallow?

Choose iron tablets in capsule form if you have trouble swallowing supplements. (Gel) capsules are easier to swallow because they are smoother and less sharp.

Iron pills tend to be relatively large compared to some other supplements, mainly because iron is a mineral that needs to be taken in larger amounts to be effective.

The size of an iron pill depends on the brand, dosage, and form (e.g., tablet, capsule, or soft gel). So, check the packaging carefully!

Additives in Iron Supplements

Choose iron supplements without unnecessary additives, such as artificial flavors and fillers.

A clean-label supplement contains only natural ingredients. This label indicates that no artificial substances have been added to the formula.

Every nutritional supplement needs additives, but we choose natural additives:

  • Natural anti-caking agent - MCT powder (from coconut)
  • Natural anti-caking agent - Rice fiber extract
  • Natural capsule - HPM cellulose

What is iron good for?

Iron has several functions in the body:

  • It helps make hemoglobin , which carries oxygen from the lungs to the rest of the body.
  • Iron plays a role in producing energy in the cells.
  • It supports a healthy immune system
  • Iron is involved in making neurotransmitters , which are important for the brain, mood and memory.
  • It is necessary for the production of DNA , which is important for tissue growth and repair.

What are the symptoms of low iron?

An iron deficiency can be recognized by the following symptoms:

  1. Fatigue - Iron is needed to transport oxygen. Less oxygen means you can produce less energy, which leads to fatigue.
  2. Quickly out of breath - The less oxygen your blood can carry, the faster you have to breathe and therefore quickly become out of breath.
  3. Pale skin - an iron deficiency causes poor blood circulation. This can lead to pale skin.
  4. Restless legs - Iron deficiency can affect dopamine production, which can trigger restless legs.

The causes of iron deficiency

Because the body can recycle iron and store it relatively easily, an iron deficiency doesn't develop overnight. It's a gradual process.

These are the most common causes of iron deficiency:

  1. Blood loss (menstruation, stomach ulcer, blood donation, tumors)
  2. Have a higher need for iron (pregnancy, breastfeeding)
  3. Reduced ability to absorb iron (intestinal problems, gastric reduction surgery)
  4. Not getting enough iron (diet, often with vegans)

Side effects of iron tablets

Iron biglycinate is the most effective and stomach-friendly form of iron pills.

Other forms of iron, especially the inorganic variants, can sometimes cause complaints.

The most common side effects of iron tablets are:

  • Yield
  • Nausea
  • Stomach ache

If you get a safe dose of a well-absorbable form, you will not have this problem.

Ebrina van der Bijl - Natural Performance

Ebrina van der Bijl

Ebrina is a nutritionist with a deep commitment to healthy eating and a sustainable lifestyle, based in beautiful Portugal. Her passion for natural and organic products is at the heart of her work. With a background in Nutrition & Dietetics and experience in product development and writing, she translates complex scientific information into practical advice for a balanced lifestyle.

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Sources used

  1. Maarouf, M., Maarouf, C., Yosipovitch, G., & Shi, V. (2019). The impact of stress on epidermal barrier function: an evidence‐based review. British Journal Of Dermatology , 181 (6), 1129–1137. https://doi.org/10.1111/bjd.17605
  2. Heffernan, A., Evans, C., Holmes, M., & Moore, J. (2017). The Regulation of Dietary Iron Bioavailability by Vitamin C: A Systematic Review and Meta-Analysis. Proceedings Of The Nutrition Society , 76 (OCE4). https://doi.org/10.1017/s0029665117003445