10 Best Ferrous Bisglycinate of 2026

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

August 2026 Edition

Editor's Choice

9.7

MegaFood

MegaFood Blood Builder Iron Supplement for Women & Men – Increase Iron Levels Without Side Effects – Improves Energy Levels – B12, Folic Acid & Vitamin C for Absorption – Vegan, Non-GMO - 90 Tablets

Editor's bottom line:

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

Main Highlights

INCREASES IRON LEVELS: MegaFood Blood Builder was shown in an 8-week clinical trial to increase Iron levels with no GI side effects, such as nausea or constipation(1); Made with high-absorption Iron Bisglycinate(2); With Vitamin C for absorption+
SUPPORTS RED BLOOD CELL PRODUCTION: These Iron supplements for women include Folic Acid & B12 to help maintain red blood cell production. Delivers 26 mg of Iron per serving to combat fatigue & improve energy levels; B Vitamins support energy metabolism+
GENTLE & CONVENIENT FORMULA: Blood Builder is a gentle & effective formula that can be used as iron tablets for women, menstruating women, vegans, vegetarians, athletes, and recent blood donors.
FLEXIBLE DOSAGE: Take 1 tablet any time of day with a beverage, even on an empty stomach; This new option for iron is suitable for vegan diets, Not intended for children; This daily dietary supplement is made for adults to take by mouth with water at home or on the go and fits perfectly into any supplement users routine.
COMMITTED TO QUALITY: Tested for 150 chemical substances. Non-GMO Project verified, vegan, and kosher; The iron vitamin tablets are made without gluten, dairy, eggs, tree nuts, peanuts, soy, fish, shellfish or sesame in a GMP facility

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Picked by 397 people today

9.5

Pure Micronutrients

Iron Supplement for Women, Gentle Iron Bisglycinate 25mg, 120 Count

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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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

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

Save 15%

Micro Ingredients

Micro Ingredients Ferrous Iron Bisglycinate 65 mg, 240 Softgels | Chelated Iron Supplement for Women & Men | Supports Red Blood Cell Production* | with Vitamin C & Black Seed Oil | Non-GMO

15% Off

Main Highlights

Micro Ingredients offers 65 mg iron per serving as ferrous bisglycinate, paired with vitamin C. Features a chelated iron form designed as a daily wellness option beyond standard iron supplements.
Each bottle contains 240 softgels with a two-softgel serving, delivering a 4-month supply. Includes 90 mg vitamin C per serving in an easy-to-take softgel format made with black seed oil.
Designed for women and men seeking an all-in-one iron formula that combines chelated iron, vitamin C, and black seed oil in one serving.
Taking daily iron is often about finding a form that feels simple to stay consistent with. Iron bisglycinate is a chelated form often sought out by those looking for a smoother alternative to traditional iron options.
Non-GMO and manufactured in a cGMP-compliant facility. Third-party lab tested for quality and consistency. Free of wheat, gluten, soy, dairy, and tree nuts.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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9.0

THORNE

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

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 trusted by 100+ professional sports teams and the #1 most recommended clinical brand by consumers and health-care practitioners (Based on a 2026 independent survey of US supplement consumers and health-care practitioners)

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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, 90 Vegetarian Capsules

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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8.6

Save 12%

Nutricost

Nutricost Iron Bisglycinate Supplement (25mg) 240 Capsules, Gentle Iron

12% Off

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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8.3

THORNE

THORNE - Advanced Iron Complex - Complete Blood Support Formula* - Elemental Iron, Folate, B and C Vitamins for Optimal Absorption - Chelated Iron Supplement - Gluten, Dairy & Soy-Free - 60 Capsules

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 trusted by 100+ professional sports teams and the #1 most recommended clinical brand by consumers and health-care practitioners (Based on a 2026 independent survey of US supplement consumers and health-care practitioners)

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8.1

Save 5%

Nature's Bounty

Nature’s Bounty Gentle Iron 28 mg Capsules with Vitamin C, Folic Acid, Vitamin B-12 Iron Supplement, Non-GMO, Gluten-Free, 90 Count

5% Off

Main Highlights

IRON SUPPLEMENT WITH VITAMIN C FOR WOMEN & MEN: gentle on your stomach, with essential Vitamin C for optimal iron absorption (1)
SUPPORTS RED BLOOD CELL PRODUCTION (1): Helps maintain cellular energy utilization (1)
FOLIC ACID & VITAMIN B-12 FOR WELLNESS (1): Includes Folic Acid and Vitamin B-12 to support healthy blood function and overall wellness in women and adults (1)
NON-GMO & GLUTEN-FREE CAPSULES: Made with gelatin capsules, free from gluten
TRUSTED BRAND WITH QUALITY STANDARDS: Nature's Bounty offers wellness products that are backed by science and made with great ingredients; committed to quality and potency in every bottle

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Best Value

8.1

Save 40%

NOW Foods

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

40% Off

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.
Founded in 1968 by Elwood Richard, NOW is one of the largest independent, family- and employee-owned manufacturers of natural products

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Our Best Overall Choice

Best Choice

9.7

MegaFood

MegaFood Blood Builder Iron Supplement for Women & Men – Increase Iron Levels Without Side Effects – Improves Energy Levels – B12, Folic Acid & Vitamin C for Absorption – Vegan, Non-GMO - 90 Tablets

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

INCREASES IRON LEVELS: MegaFood Blood Builder was shown in an 8-week clinical trial to increase Iron levels with no GI side effects, such as nausea or constipation(1); Made with high-absorption Iron Bisglycinate(2); With Vitamin C for absorption+
SUPPORTS RED BLOOD CELL PRODUCTION: These Iron supplements for women include Folic Acid & B12 to help maintain red blood cell production. Delivers 26 mg of Iron per serving to combat fatigue & improve energy levels; B Vitamins support energy metabolism+
GENTLE & CONVENIENT FORMULA: Blood Builder is a gentle & effective formula that can be used as iron tablets for women, menstruating women, vegans, vegetarians, athletes, and recent blood donors.
FLEXIBLE DOSAGE: Take 1 tablet any time of day with a beverage, even on an empty stomach; This new option for iron is suitable for vegan diets, Not intended for children; This daily dietary supplement is made for adults to take by mouth with water at home or on the go and fits perfectly into any supplement users routine.
COMMITTED TO QUALITY: Tested for 150 chemical substances. Non-GMO Project verified, vegan, and kosher; The iron vitamin tablets are made without gluten, dairy, eggs, tree nuts, peanuts, soy, fish, shellfish or sesame in a GMP facility

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