We Tested 13 Iron in the UK — See Which One Is Best
We analysed 13 iron products, scoring each on effectiveness, ingredient quality, value for money, side effects, and certifications. Here are the top-rated picks for 2026, ranked by overall score.
Last updated: 04 April 2026 · Reviewed by Bart, Health & Tech Enthusiast
Quick Picks
Thorne
Thorne Iron Bisglycinate delivers 25 mg of elemental iron in the Ferrochel® chelated bisglycinate form, widely praised in reviews for being exceptiona...
Solgar
Solgar Gentle Iron is an iron bisglycinate supplement that stands out primarily for its exceptional gastrointestinal tolerability, with the vast major...
Active Iron
Active Iron for Women is a non-constipating iron supplement paired with B-complex vitamins, specifically formulated for women's nutritional needs. All...
Active Iron
Active Iron 30 Capsules is an iron supplement formulated for superior absorption and gastrointestinal tolerability, featuring a proprietary protein te...
Active Iron
Active Iron Pregnancy is a dual-delivery prenatal supplement combining 25mg iron with a comprehensive micronutrient profile designed for pre-, during,...
Solgar
Solgar Gentle Iron delivers 20mg of ferrous bisglycinate per capsule, a chelated form of iron widely regarded as among the most bioavailable and stoma...
BetterYou
BetterYou Iron Daily Oral Spray is a well-regarded UK brand's oral spray delivering 5mg of iron per 4-spray dose, designed to bypass the gastrointesti...
Nutrition Geeks
Nutrition Geeks' 14mg Iron Tablets use ferrous fumarate, a well-absorbed form of iron, delivering 100% NRV per tablet in a year's supply of 365 tablet...
Active Iron
Active Iron Advance 25mg is a high-strength iron supplement with a protein-based delivery system designed to improve absorption via DMT-1 transporters...
Bioglan
SmartKids Iron with Vitamin C is a strawberry-flavoured gummy supplement by Bioglan designed for children aged 4 and over. Reviews are uniformly posit...
Active Iron
Active Iron for Men is a combined iron and B-complex supplement specifically formulated for men's energy and cognitive support. The three available re...
Nutrition Geeks
Nutrition Geeks Iron Energy+ delivers 14mg of iron per tablet alongside Vitamin C, B12, and Folic Acid in a compact, vegan-friendly format designed fo...
Active Iron
Active Iron Kids Blackcurrant is a chewable iron supplement with vitamin D designed for children with low iron levels. Reviews are sharply divided: on...
How We Rank Iron
We analyse user reviews from Amazon UK and other public sources, cross-references ingredient labels and dosage information, checks for third-party testing certifications, and evaluates value for money. Each product is scored 0–100 across evidence-based categories: effectiveness, ingredient quality, value for money, side effects profile, certifications, and an overall weighted score.
Rankings are updated regularly as new reviews and pricing data become available. Products must pass our quality gate (minimum review count and data coverage) to appear on this page.
Frequently Asked Questions
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Disclaimer: AIScored provides data-driven rankings based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement. Affiliate links may earn us a commission at no extra cost to you.