Iron Bisglycinate (Gentle Iron)

Blood & vitality

Function & benefits

Iron contributes to normal formation of red blood cells and haemoglobin, normal oxygen transport in the body, normal cognitive function and the reduction of tiredness and fatigue (EFSA-authorised claims).

Dosage & how to use

Recommended dose	14–25 mg elemental iron daily (only when a deficiency is confirmed)
Best time to take	On an empty stomach with half a glass of orange juice, or with a light snack if it causes nausea
Frequency	Once daily

Best forms to choose

Iron bisglycinate: gentle on the stomach and gut, with less constipation and nausea than traditional ferrous sulphate.

Important warnings

Do not take it without a prior ferritin blood test; iron builds up in the liver, heart and pancreas and the body has no effective way to excrete it

Not for people with haemochromatosis

Keep it well out of reach of children to prevent acute poisoning

Drug interactions

Take it two hours apart from coffee, tea, calcium and magnesium supplements and antacids, and four hours apart from levothyroxine (thyroid hormone) and antibiotics (quinolones and tetracyclines).

View in the supplements guide

Related supplements

Scientific references

EFSA Journal 2009;7(9):1215 (iron health claims)
NIH Office of Dietary Supplements (ODS): Iron Fact Sheet
WHO Guideline: Daily iron supplementation in adult women and adolescent girls (2016)

📚 Published sources and research: European Food Safety Authority (EFSA) • National Institutes of Health (NIH - ODS) • PubMed / Cochrane databases

Content last updated: 17 October 2026 · Based on published sources and research (EFSA / NIH / PubMed)

⚖️ Medical disclaimer: The information and data provided here are for health education and nutritional guidance only. They are not a medical diagnosis and never replace a direct consultation with your doctor or pharmacist. Always consult your doctor before starting any supplement, especially during pregnancy or breastfeeding or when taking long-term medication.