10 Best Iron Bisglycinate Supplement of 2025

Tested and Reviewed: Top 10 Iron Bisglycinate Supplement deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Pure Micronutrients

Iron Supplement for Women - Gentle Chelate Iron Bisglycinate 25mg with Vitamin C, B6, B12 Folic Acid – Supports Iron Deficiency, Menstrual Health & Energy - 120 Count

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Editor's bottom line:

“This iron bisglycinate supplement is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

GENTLE IRON FOR SENSITIVE STOMACHS - Our Chelated iron bisglycinate is clinically proven to be 3x more absorbable than regular iron sulfate, reducing the incidence of constipation, nausea and digestive discomfort that plague most iron supplements*
DESIGNED FOR WOMEN'S UNIQUE NEEDS - Specifically formulated to support heavy menstrual cycles, pregnancy preparation and postpartum recovery. Includes folic acid for reproductive health and optimal iron absorption during your monthly cycle.
BOOST ENERGY, FOCUS & CLARITY - Our high potency formula helps optimize energy levels and combat fatigue & brain fog, especially for women experiencing heavy menstrual cycles, or who have dietary restrictions, or high physical activity levels.
FAST ACTING COMPLETE BLOOD BUILDER - Contains Ferrochel chelated iron (the gold standard), 5-MTHFR folate, Vitamin C, B6, and B12. One convenient capsule delivers everything your body needs to build healthy red blood cells naturally & quickly!
PREMIUM QUALITY & SAFETY - Made in USA, third-party tested, vegan, non-GMO, and free from common allergens. 120-day supply with our satisfaction guarantee. Recommended by healthcare professionals for women with iron deficiency.

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Picked by 397 people today

9.5

Nutricost

Nutricost Iron Bisglycinate Supplement (25mg) 240 Capsules - from Ferrous Bisglycinate Chelate - Non-GMO & Gluten-Free, Gentle Iron

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Main Highlights

Essential Mineral Support: Nutricost Gentle Iron Bisglycinate Supplement offers essential support for overall health and vitality, helping you feel your best every day. Iron from Ferrochel (Ferrous Bisglycinate Chelate).
25mg of Iron Bisglycinate: Each capsule provides 25mg of iron bisglycinate, a highly bioavailable form of iron to support your overall well-being.
240 Capsules per Bottle: Enjoy a generous supply with 240 capsules in each bottle, providing you with ample support for your daily iron needs.
Manufactured in NSF-Certified GMP-Compliant Facility: Trust in the quality of our product, crafted in a facility adhering to the highest standards of quality and safety, certified by NSF and compliant with GMP.
Rigorous Third-Party Testing: Each batch undergoes meticulous third-party testing by independent ISO-accredited laboratories, ensuring the purity and potency of our formula.

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9.5

NAKED

Naked Iron 65mg, 325mg Ferrous Bisglycinate - High Potency Iron Supplement for Iron Deficiency, Cellular Energy Support, Promotes Healthy Red Blood Cell Production, Non-GMO, Gluten-Free, 60 Capsules

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Main Highlights

WELL-ABSORBED IRON: 65mg as Ferrous Bisglycinate has high bioavailabilty and better absorption than ferrous sulfate which is the least expensive and most common type of iron supplement. Iron bisglycinate is also associated with less stomach intolerance.
BLOOD SUPPORT: Iron is an essential mineral for the formation of new blood cells and ferrous bisglycinate shows some benefit over other iron supplements in increasing hemoglobin and ferritin levels.
INCREASE IRON LEVELS: Symptoms of iron deficiency include fatigue, weakness, pale or yellow "sallow" skin, shortness of breath especially with activity, dizziness, rapid heart beat, tinnitus, drowsiness, irritability, infrequent menstruation, and loss of libido. *Note: Daily values are what the U.S. Government determined as the amount just over what is needed to keep from developing a specific nutrient-deficiency disease. The optimal amount to make a difference in your health is often much higher than the government value.
VEGAN IRON SUPPLEMENT: Vegan, GMO Free, Gluten Free and Made in the USA. Capsule size 00 = 23.4mm length and 8.53mm diameter. Adults, for iron deficiency take 1 capsule daily with water and a meal.
THE NAKED DIFFERENCE: Founded over 10 years ago to help support your health and fitness goals by sourcing premium ingredients, using as few of them as possible and being transparent so you know exactly what's going into your body.

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9.2

THORNE

THORNE - Iron Bisglycinate - 25 mg Iron Supplement for Enhanced Absorption Without Gastrointestinal Side Effects* - NSF Certified for Sport - Gluten-Free - 60 Servings

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Main Highlights

Well-Absorbed Iron: Provides 25 mg of elemental iron per capsule in a non-constipating, well-absorbed form as iron bisglycinate
Symptoms of Low Iron: Nearly 1 in 3 adults in the U.S. may have low iron levels, which can manifest as weakness, fatigue, shortness of breath, dizziness, drowsiness, irritability, infrequent menstruation, and more
Blood Support: Dietary iron is essential for the formation of new red blood cells, especially important for women of childbearing age, after blood loss from surgery/injury, or for those who follow vegan/vegetarian diets*
NSF Certified for Sport: Tested for compliance with label claims and to ensure the absence of nearly 300 substances banned by many major athletic organizations
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

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9.0

Bronson

Bronson Iron Bisglycinate 25 mg Gentle on The Stomach, Supports Energy & Healthy Red Blood Cell Production - Non-Constipating Formula - Non GMO, 90 Vegetarian Capsules

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Main Highlights

Easy On The Stomach & Non-Constipating: Bronsons Iron Bisglycinate provides 25 mg of non-constipating Iron per vegetarian capsule to support healthy red blood cell production.* Iron Bisglycinate 25 mg helps to combat potential iron deficiency by improving nutritional iron levels.
Energy + Circulation: Iron Bisglycinate 25 mg helps to maintain healthy hemoglobin levels, blood circulation, energy levels, and more.* Each capsule provides Iron as Ferrous Bisglycinate Chelate, which has been shown to deliver a highly absorbable form of this key mineral.
Superior Quality: Laboratory tested Non-GMO, Gluten-Free and Soy-Free. Bronson products are in-house tested and carefully manufactured by trained professionals in our state-of-the-art facility that is located in Hauppauge, New York.
Trusted Since 1960: The pioneers of Bronson Vitamins were a group of pharmacists who witnessed the benefits of vitamins and mineral supplementation firsthand with their patients. Bronson Vitamins have been consistently mentioned by top medical professionals since our inception in 1960.

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8.8

Bronson

Bronson Iron Bisglycinate 25 mg Gentle on The Stomach, Supports Energy & Healthy Red Blood Cell Production - Non-Constipating Formula - Non GMO, 180 Vegetarian Capsules

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Main Highlights

Easy On The Stomach & Non-Constipating: Bronsons Iron Bisglycinate provides 25 mg of non-constipating Iron per vegetarian capsule to support healthy red blood cell production.* Iron Bisglycinate 25 mg helps to combat potential iron deficiency by improving nutritional iron levels.
Energy + Circulation: Iron Bisglycinate 25 mg helps to maintain healthy hemoglobin levels, blood circulation, energy levels, and more.* Each capsule provides Iron as Ferrous Bisglycinate Chelate, which has been shown to deliver a highly absorbable form of this key mineral.
Superior Quality: Laboratory tested Non-GMO, Gluten-Free and Soy-Free. Bronson products are in-house tested and carefully manufactured by trained professionals in our state-of-the-art facility that is located in Hauppauge, New York.
cGMP Premium Standards: Every product manufactured by Bronson is put through a rigorous process to ensure purity, potency and integrity. Through our very own cGMP Certified New York Facility that complies with the most current regulations, we promise to deliver top-quality supplements that are consistently verified for quality and safety.
Trusted Since 1960: The pioneers of Bronson Vitamins were a group of pharmacists who witnessed the benefits of vitamins and mineral supplementation firsthand with their patients. Bronson Vitamins have been consistently mentioned by top medical professionals since our inception in 1960.

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8.6

Igennus Healthcare Nutrition

Igennus Clean Iron Bisglycinate 20mg, Vitamin C, 6 Month Supply, Gentle Chelated High Absorption Formula & Targeted Release Ferrous Bisglycinate for Women and Men, One Daily, Vegan, 180 Tablets

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Main Highlights

IRON COMPLEX WITH VITAMIN C expertly formulated to raise ferritin levels higher, with an effective daily dose of 20mg of bioavailable iron bisglycinate, combined with vitamin C to support the transport of iron, enhancing uptake in the body
HIGH ABSORPTION chelated iron bisglycinate is absorbed up to 4x better than ferrous sulphate. Targeted release technology delivers iron directly to the small intestine
PURE & CLEAN vegan; non-GMO; hypoallergenic ingredients with no unpleasant fillers (silicon dioxide, magnesium stearate or titanium dioxide); natural taste with no added flavors. Lab verified, GMP manufactured in the UK
GENTLE ON THE STOMACH we use a well-tolerated chelated form which binds iron to glycine, preventing irritation of gut tissue. Non-constipating & no nausea associated with standard iron supplements
SUPPORTS ENERGY LEVELS, BRAIN FUNCTION & IMMUNE HEALTH by restoring healthy iron levels, supplementation may alleviate common symptoms of iron deficiency, including low energy, brain fog and poor immune defences

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8.3

NOW Foods

NOW Supplements, Iron 36 mg, Double Strength, Non-Constipating*, Essential Mineral, 90 Veg Capsules

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Main Highlights

DOUBLE STRENGTH/ESSENTIAL MINERAL: Iron is an essential mineral that plays central roles in energy production, immune system function, and neurological health*
GENTLE AND NON-CONSTIPATING*: NOW uses Ferrochel Iron Bisglycinate, which has clinically demonstrated superior absorption and is well tolerated because it is gentle and non-constipating*
CLASSIFICATIONS/CERTIFICATIONS: Vegan, Soy Free, Kosher, Non-GMO, Halal
GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product formulation.
Packaged in the USA by a family owned and operated company since 1968

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8.1

THORNE

THORNE - Advanced Iron Complex (Formerly Ferrasorb) - Complete Blood Support Formula* - Elemental Iron, Folate, B and C Vitamins for Optimal Absorption - Gluten, Dairy & Soy-Free - 60 Servings

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Main Highlights

Well-Absorbed Iron: Provides 36 mg of elemental iron per capsule in a well-absorbed, non-constipating form as iron bisglycinate, with B vitamins and vitamin C to enhance irons absorption*
Iron Plus B Vitamins: A nourishing supplement that combines vitamins B6 (pyridoxal 5'-phosphate), B12 (methylcobalamin), and B9 (folate as L-5-MTHF) with well-absorbed iron bisglycinate
Symptoms of Low Iron: Nearly 1 in 3 adults in the U.S. may have low iron levels, which can manifest as weakness, fatigue, shortness of breath, dizziness, drowsiness, irritability, infrequent menstruation, and more
4 Rounds of Testing: Our state-of-the-art laboratories enable us to conduct 4 rounds of testing on every product, from analyzing the purity of raw materials to confirming the shelf life of finished formulas
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

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8.1

Futurebiotics

Futurebiotics Iron Bisglycinate 25mg Gentle on The Stomach, Supports Energy & Healthy Red Blood Cell Production - Non-Constipating Formula - Non GMO, 90 Vegetarian Capsules

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Main Highlights

Gentle On The Stomach & Non-Constipating*: Futurebiotics Iron Bisglycinate provides 25 mg of chelated Iron per vegetarian capsule to support healthy red blood cell production.* Iron Bisglycinate 25 mg helps to combat potential iron deficiency by improving nutritional iron levels.*
100% Chelated Iron For Absorption*: Each capsule provides Iron as Ferrous Bisglycinate Chelate, which has been shown to deliver a highly absorbable form of this key mineral.*
Superior Quality GMO-Free: Carefully manufactured at our cGMP Registered Facility that is located in Hauppauge, New York. Each and every Futurebiotics product is put through a rigorous process to ensure purity, potency and quality. Futurebiotic Iron Bisglycinate Capsules are in-house tested and free of GMOs, Gluten and Soy.
Premium Ingredients: We strive to only seek the purest and superior quality ingredients from around the world.

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Our Best Overall Choice

Best Choice

9.7

Pure Micronutrients

Iron Supplement for Women - Gentle Chelate Iron Bisglycinate 25mg with Vitamin C, B6, B12 Folic Acid – Supports Iron Deficiency, Menstrual Health & Energy - 120 Count

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

GENTLE IRON FOR SENSITIVE STOMACHS - Our Chelated iron bisglycinate is clinically proven to be 3x more absorbable than regular iron sulfate, reducing the incidence of constipation, nausea and digestive discomfort that plague most iron supplements*
DESIGNED FOR WOMEN'S UNIQUE NEEDS - Specifically formulated to support heavy menstrual cycles, pregnancy preparation and postpartum recovery. Includes folic acid for reproductive health and optimal iron absorption during your monthly cycle.
BOOST ENERGY, FOCUS & CLARITY - Our high potency formula helps optimize energy levels and combat fatigue & brain fog, especially for women experiencing heavy menstrual cycles, or who have dietary restrictions, or high physical activity levels.
FAST ACTING COMPLETE BLOOD BUILDER - Contains Ferrochel chelated iron (the gold standard), 5-MTHFR folate, Vitamin C, B6, and B12. One convenient capsule delivers everything your body needs to build healthy red blood cells naturally & quickly!
PREMIUM QUALITY & SAFETY - Made in USA, third-party tested, vegan, non-GMO, and free from common allergens. 120-day supply with our satisfaction guarantee. Recommended by healthcare professionals for women with iron deficiency.

Show Price

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