10 Best iron supplement for sensitive stomach (2025)

Iron supplements for sensitive stomachs are essential for those who struggle with digestive discomfort while trying to boost their iron levels. In 2025, the 10 best options include gentle formulations like ferrous bisglycinate and heme iron polypeptide, which are known for their superior absorption and minimal gastrointestinal side effects. Brands such as Garden of Life, MegaFood, and Solgar offer chelated iron supplements that are easier on the stomach. Additionally, liquid iron supplements like Floradix provide a gentle alternative, while incorporating vitamin C can enhance absorption without irritation. Choosing the right iron supplement can significantly improve overall well-being for sensitive individuals.

SaleBestseller No. 1

Solgar Gentle Iron - Ideal for Sensitive StomachsRed Blood Cell Supplement, , Non Constipating & GMO, Vegan, Gluten & Dairy Free, Kosher - 180 Servings, Unflavored, 180 Count

Advanced, Patented Form Of Iron; Solgar Gentle Iron 25mg is gentle on your system; Non-constipating, Stomach friendly iron supplement for women and men
Enhanced Absorption Formulation; Helps promote iron rich blood; Iron is an important component of hemoglobin, the protein that carries oxygen from lungs to all body tissues and cells
Supports Energy Utilization; Iron promotes normal red blood cell production; Iron is a key mineral and essential nutrient for many biological functions
Non GMO And Gluten Free; Solgar Gentle Iron 25mg Vegetable Capsules are suitable for vegans; Free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener, and color
The Gold Standard: For over 70 years Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials

Bestseller No. 2

Slow Fe 45mg Iron Supplement for Iron Deficiency, Slow Release, High Potency, Easy to Swallow Tablets - 60 Count

One 60-count blister pack of Slow Fe 45mg Iron Supplement for Iron Deficiency
#1 doctor recommended iron tablets for iron deficiency
High potency iron formulated for daily use and less discomfort
Non constipating iron supplements that feature a special controlled release system that delivers iron slowly to your body, causing fewer digestive side effects
Iron pills for anemia in an easy-to-swallow tablet

SaleBestseller No. 3

Nature's Bounty Gentle Iron 28 mg 90 Capsules

GENTLE AND NON-CONSTIPATING: Makes it ideal for individuals with sensitive stomachs
IRON CONTENT: Each capsule contains 28 mg of iron, providing a significant amount of this essential mineral to support healthy iron levels in the body
RED BLOOD CELL PRODUCTION: Iron is a vital component in the production of red blood cells, which are responsible for transporting oxygen throughout the body and maintaining overall energy levels
CONVENIENT CAPSULE FORM: Easy to swallow and incorporate into your daily routine, allowing for consistent iron supplementation without any hassle
OVERALL WELL-BEING: By supporting healthy iron levels, helps you feel energized and vibrant throughout the day

Bestseller No. 4

MegaFood Blood Builder - Iron Supplement Clinically Shown to Increase Iron Levels without Side Effects - Iron Supplement for Women with Vitamin C, Vitamin B12 and Folic Acid - Vegan - 90 Tabs

Gentle Iron Tablets: Clinically shown to increase iron levels without side effects
Vital Nutrients: Formulated with vitamin C and beet root
Nourishing Ingredients: Includes folic acid and vitamin B12 for healthy red blood cell production
Better Health Starts with Nature: We use real food and added nutrients in our premium supplements
Goodness is in Our Roots: We believe you are what you do, and so we’re obsessed with quality

Bestseller No. 5

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

Well-Absorbed Iron: Provides 25 mg of elemental iron per capsule in a non-constipating, well-absorbed form as iron bisglycinate
Resists Fatigue: Resists fatigue and other symptoms of iron deficiency, such as weakness, shortness of breath, dizziness, tinnitus, drowsiness, irritability, infrequent menstruation, and loss of libido
Blood Support: An essential mineral for the formation of new blood cells
Certified For Sport: Supports high-performance nutrition programs and is NSF Certified for Sport
Trusted: Thorne is chosen and trusted by 100+ pro teams. Thorne is the only supplement manufacturer to collaborate with Mayo Clinic on wellness research and content. Thorne is a proud partner of U.S. Olympic Teams

SaleBestseller No. 6

Doctor's Recipes Iron Supplement 65 mg with Vitamin C - Maximized Absorption, Stomach Friendly & High Potency Iron Pills for Red Blood Cells Formation & Immunity Health - Vegan Non-GMO 60 Iron Tablets

High Potency Iron Supplement for Women Men, with High Absorption 250 mg Vitamin C: Doctor's Recipes Iron helps increase iron levels by providing 65 mg of elemental carbonyl iron. Our stomach-friendly iron tablet is enriched with 250 mg of vitamin C, which helps absorb iron more effectively than 125 mg vitamin C*
Well-Tolerated, Easy-to-Swallow & Vegan Non-GMO 60 High Potency Iron Tablets : Due to its gentle absorption and high (>98%) iron content, our carbonyl iron pills are a better choice for iron supplementation with fewer digestive side effects and reduced tablet weight, non constipating, compared with ferrous salts
Supports Healthy Iron Levels Without Side Effects*: Your body uses iron to make hemoglobin, a protein which carries oxygen from our lungs throughout our bodies, and myoglobin, a protein which supplies oxygen to muscles.* In addition, iron provides support for increased energy, improved focus, immune responses, and the regulation of body temperature*
Proudly Made in the USA, Third Party Tested Slow Release Iron Pills: Our advanced strength formula is loaded with the highest grade & naturally sourced ingredients in a GMP certified facility in the USA. Doctor’s Recipes Iron is 100% pure, natural, vegan friendly & NON-GMO with no soy, gluten and dairy
Personal Choices, Professional Solutions: At Doctor’s Recipes, we believe the products and services should be done professionally and with enthusiasm. Doctor’s Recipes nourishes the goodness inside your body to help you maintain a healthy lifestyle. We have everything you need and nothing you don’t, and you will always know what you’re putting in your body. The name of this exceptional brand leaves little to imagination, and it’s a title well-deserved

Bestseller No. 7

Doctor's Best High Absorption Iron Tablet with Ferrochel, Gentle on The Stomach, Immune Health, Blood Health, 27 mg

DOCTOR’S BEST HIGH ABSORPTION IRON WITH FERROCHEL - contains chelated iron to help increase bioavailability. Chelation helps iron to be optimally absorbed by our body and is well-tolerated by the digestive system.*
ESSENTIAL IRON - an essential mineral that helps in the production of normal red blood cells. The most common cause of anemia is iron deficiency. It is an important component of hemoglobin which carries oxygen throughout the body.*
BOOST IRON LEVELS - helps to build your iron levels, supports immune healthy and support cell production. Essential component of hemoglobin, the protein that carries oxygen from lungs to all body tissues and cells. Iron supports normal red blood cell production.*
EASY TO DIGEST - High Absorption Iron 27 mg contain a gentle, form of iron known as Ferrochel, a patented, fully reacted chelated ferrous bisglycinate. Ferrochel Iron is chelated with two glycines providing high absorption and increased tolerability.* Gentle on your stomach iron supplement for women and men.*

Bestseller No. 8

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

Easy On The Stomach & Non-Constipating: Bronson’s 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.

Bestseller No. 9

Iron Supplement for Women - Iron 65mg (Ferrous Sulfate 325mg) - Stomach Friendly | Slow Release Iron | High Absorption - Vitamins C, D3, B6, B12 & Folate - Iron Level & Energy Support - 60 Capsules

Slow Release Iron 65mg — Your recommended daily dose of Iron in highly bioavailable ferrous sulfate form is crafted to support your body's essential functions and maintain optimal health. Our slow-release iron supplement is designed to provide iron 65mg in a form that ensures optimal absorption, making it an ideal iron supplement for women & men.
7-in-1 Complex — Iron with Vitamin C, B12 & D3. Enhanced with vitamin C to support iron absorption and is powered with essential vitamins, maximizing benefits for your health. Our iron supplement with vitamin C is perfect for those looking for iron supplements with enhanced bioavailability. Our iron supplement 65 mg is also suitable for vegan iron supplements enthusiasts, providing a comprehensive iron vitamins solution that is gentle and stomach-friendly.
Gentle & Stomach-friendly — Crafted with a delayed-release technology, our iron supplement releases in the intestines, reducing side effects and enhancing absorption. This gentle iron supplement for women and men ensures you receive the full benefits of the iron vitamin C complex without the common digestive issues associated with iron supplements. The slow-release iron technology makes it a perfect choice for those seeking a gentle iron experience.
Made in USA With Globally Sourced Ingredients — Rest assured! A slow-release iron supplement is proudly manufactured in the USA under strict quality control standards, Third Party Tested & GMP certified. We adhere to rigorous procedures to ensure every batch's safety, purity, and efficacy. We use the most potent forms of each component to achieve maximum effect. Highest quality & purity to ensure the best results!
Trustworthy Service — We are committed to providing exceptional customer service and transparency with NUTRAHARMONY’s carefully selected Iron! With our iron supplements for men & women, you can trust that you're receiving a premium-quality supplement backed by scientific research and dedicated customer support!

Bestseller No. 10

21st Century Slow-Release Iron Supplement, 60 Count, High Potency Iron Tablets with 142 mg Ferrous Sulfate, Gluten Free Iron Supplement for Women & Men, With No Added Yeast or Artificial Flavors

HIGH-POTENCY IRON SUPPLEMENT: 21st Century Slow Release Iron delivers 45 mg elemental iron per tablet, equivalent to 142 mg Ferrous Sulfate. This gentle iron supplement offers gradual absorption to enhance energy levels while minimizing discomfort
IRON PILLS FOR ADULTS: These iron tablets support healthy red blood cell production. Suitable for adults with increased iron needs or those looking for mineral supplements to boost energy, vitality, and overall wellness
EASY DAILY NUTRITION: Take one tablet daily with a meal or as directed by a healthcare provider. Do not exceed the recommended dosage. Individual results may vary. Maintain optimal iron levels without the side effects of traditional iron supplements*
CAUTION & CARE: These iron supplements are gluten-free and have no added yeast or artificial flavors, making them suitable for daily use. Contains a bioengineered food ingredient to support modern nutrient needs effectively
WELLNESS THAT WORKS FOR YOU: For over 30 years, the 21st Century has been proud to offer high-quality, innovative, and trusted vitamin and supplement products to improve the health and well-being of individuals, families, and communities worldwide

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