Our Science. 

Active Iron revolutionises how iron supplements work. Designed to overcome the common drawbacks of traditional iron, our cutting-edge formula is clinically proven to deliver better results, fewer side effects, and greater comfort—all backed by rigorous science.

The Active Iron Difference.

Superior Absorption

Traditional iron supplements struggle with low absorption and high side effects. Active Iron changes that. Our advanced protein formula protects the iron in the stomach, releasing it in the small intestine—where it’s absorbed best.

Active Iron site of absorption
Active Iron pack

Gentle on your Gut

Say goodbye to nausea, constipation, and bloating. Our clinical study shows Active Iron is far more tolerable than standard iron supplements, making it a comfortable, long-term solution for anyone—even those with sensitive stomachs.

Focused on Women’s Health.

Women have endured the side effects of oral iron for too long. That’s why we launched a clinical research programme to explore how Active Iron improves compliance, tolerability, and health outcomes. The goal: empower women to restore their iron levels while enhancing their quality of life.

Study 1: Clinically Proven Better Absorption.

2X Better Absorption

Our clinical evidence proved that Active Iron delivers twice the absorption¹ compared to traditional iron sulfate supplements, ensuring your body gets the iron it needs efficiently.


Study 2: Clinically Proven Efficacy.

Non-Constipating & Gentle

Our clinical study confirmed that Active Iron causes six times less gut irritation² compared to other iron supplements, making it a gentler choice for long-term use.

94% Increase In Iron Levels

Evidence shows Active Iron increases iron levels by 94%², providing significant support for those with low iron levels.

Significant Increase in Energy Levels

Participants in our study reported increased energy levels, demonstrating the real-life benefits of better iron absorption and improved iron stores.

Recommended By Experts.

Healthcare Professionals trust Active Iron for its clinically proven efficacy & tolerability.

Rebecca Traylen - BSc (Hons) in Biology and an MSc (Hons) in Nutrition

Rebecca has a BSc (Hons) in Biology and an MSc (Hons) in Nutrition, and is a recognised Associate Nutritionist (ANutr). She specialises in gut health, an area where she combines scientific knowledge with practical, tailored solutions.

Dr Ria Clarke - Obstetrician & Gynaecologist

Dr Ria Clarke is an obstetrics and gynaecology registrar in the South of England. Throughout her training, she has dedicated herself to learning how to amplify the voices of the individuals and families she cares for.

Marie Louise Hurworth - Midwife & Author

Marie Louise is a Pregnancy Advisor for Active Iron as well as a Prenatal Course Educator & experienced Midwife for the NHS and Author of ‘Pregnancy, Birth & Beyond’.

Dr. Stephanie Ooi - General Practitioner

Dr. Stephanie is a Women’s Health Advisor for Active Iron as well as a General Practitioner. Dr Stephanie is also a host of The Medic Mum Podcast.

Expert Insights & White Papers.

Our team of experts has developed a series of in-depth white papers on key health topics, including period health, pregnancy & postpartum, athletic performance & perimenopause. These research-backed insights explore the science behind iron and its role in maintaining overall well-being.

Improving the Quality of Life for Women with Endometriosis & Menorrhagia.

This white paper by Dr. Ria Clarke aims to describe some of the common features of endometriosis and menorrhagia.

Avoiding Treatment Failure with Iron Supplementation.

The purpose of this paper is to inform women, healthcare professionals and birth workers of the importance of iron during pregnancy

The Importance of Optimised Iron Levels for Female Athletes.

Renee McGregor, a leading sports & eating disorder specialist, covers the importance of optimised iron levels for female athletes.

The Impact of Heavy Periods and Low Iron on Perimenopausal Women.

Emma Bardwell, a registered nutritionist and author, covers the impact of heavy periods and low iron on perimenopausal women.

Closing the Gaps in Postpartum Care.

Marie Louise discusses the vital importance of iron during pregnancy and the postpartum period.

Our Latest Research.

Active Iron is currently sponsoring a significant research project in collaboration with Ulster University. The project aims to explore the influence of higher body weight on the risk of iron deficiency and anaemia in women of reproductive age.

Why Choose Active Iron?

highly absorbable iron

Superior Absorption: maximize every dose

non-constipating and gentle

Helps Avoid Side Effects: feel the difference without discomfort

increases iron by 94%

Clinically Proven Results: proven to work when it matters most

¹Wang et al. 2017, Acta Haematologica, 138: 223-232. ²Ledwidge, M. et al. PRECISION Study. Int J Clin Pharm (2023) https://doi.org/10.1007/s11096-023-01640-7