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MineralsStrong evidence

Iron

Also known as: Fe

Iron is part of haemoglobin, which carries oxygen in the blood, and it supports energy production and brain function. Deficiency is most common in menstruating women, in pregnancy, on plant-based diets and in endurance athletes.

What it is used for

  • Treatment and prevention of iron deficiency and iron-deficiency anaemia – strong evidence
  • Reduction of tiredness when deficient – strong evidence (EFSA)
  • Hair loss with low ferritin – weak to moderate evidence
  • Benefit without proven deficiency – no evidence

Forms and how they differ

bisglycinate

well tolerated, fewer digestive complaints

fumarate, gluconate, sulphate

classic salts, effective, more often upset the stomach

with vitamin C

vitamin C improves absorption of non-haem iron

effervescent tablets with B and C vitamins

convenient, but check the iron and sugar content on the label

When to take it

Ideally in the morning on an empty stomach or with a light meal; taking it every other day may improve absorption and tolerance.

Pairs well with

Vitamin C or a meal rich in vitamin C.

Do not combine / separate

Keep at least 2 hours apart from calcium, magnesium, zinc, coffee, tea, dairy, some antibiotics and thyroid medication.

Watch out for

Take iron only after deficiency is confirmed by a blood test (ferritin, blood count) – excess is harmful. With haemochromatosis, liver or bowel disease and in pregnancy, follow your doctor's advice.

Safety

Do not exceed the label dose; higher doses only under medical supervision. Keep iron supplements away from children – overdose is dangerous for them.

Practical tip

After 2–3 months have your ferritin rechecked to know whether you still need to supplement.

Products containing Iron 19

IronBlood formationEnergyBrain & memoryWomen’s health
Iron + Vitamin C + LactoferrinchelateBlood formationEnergyBrain & memoryWomen’s health
Iron 18 mgbisglycinate · 18 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
Iron bisglycinate 14 mgbisglycinate · 14 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
Iron bisglycinate + vitamin C 14 mgbisglycinate + vitamin C · 14 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
Iron 20 mgbisglycinate · 20 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
Iron 25 mgbisglycinate · 25 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
Iron + FolatechelateBlood formationEnergyBrain & memoryWomen’s health
Iron 27 mgchelate · 27 mg / tabletBlood formationEnergyBrain & memoryWomen’s health
Iron 25 mgcitrate · 25 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
Iron fumarate + B-vitamins + vitamin C 14 mgfumarate + B-vitamins + vitamin C · 14 mg / tabletBlood formationEnergyBrain & memoryWomen’s health
Iron fumarate + zinc + folic acid + vitamin C 15 mgfumarate + zinc + folic acid + vitamin C · 15 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
Iron 18 mgferrous fumarate · 18 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
Iron gluconate 14 mggluconate · 14 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
Iron 22 mgionic · 22 mg / servingBlood formationEnergyBrain & memoryWomen’s health
Iron 20 mgliposomal · 20 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
Iron 14 mgliposomal · 14 mg / servingBlood formationEnergyBrain & memoryWomen’s health
Iron 300 mgprotein succinylate · 300 mg / capsuleBlood formationEnergyBrain & memoryWomen’s health
IronliquidBlood formationEnergyBrain & memoryWomen’s health
How to read the evidence rating
Strong evidenceModerate evidenceWeak evidenceNo evidence

Strong = several good human studies or official recommendations; moderate = promising but smaller studies; weak = few studies or mixed results; no evidence = claims not confirmed.

Combination check

Select the supplements you take and, if relevant, your medicines. We show what interferes, what needs a time gap and what to watch out for.

Check Iron with others

Which supplements do you actually need?

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From the same group

Bone support blendModerate evidenceBoronWeak evidenceCalciumModerate evidenceChromiumWeak evidenceCopperWeak evidenceElectrolytesModerate evidence
Important notice

This information is educational and does not replace advice from a doctor or pharmacist. We do not give medicine dosages. Supplements are no substitute for a varied diet; if pregnant, breastfeeding, ill or on medication, consult a doctor first.