Iron supplements for anemia without constipation are essential for those seeking to boost their iron levels without the uncomfortable side effects often associated with traditional iron supplements. In 2025, several options stand out for their effectiveness and gentle formulation, ensuring that individuals can improve their iron intake while maintaining digestive comfort. These supplements are designed to provide the necessary iron without causing gastrointestinal distress, making them ideal for those who have experienced constipation from other iron products.
MegaFood Blood Builder Minis - Iron Supplement Clinically Shown to Increase Iron Levels Without Side Effects - Iron with Vitamin C, Vitamin B12 & Folic Acid - Vegan - 72 Tablets (36 Servings)
- INCREASES IRON LEVELS: MegaFood Blood Builder was shown in a 8 week clinical trial to increase iron levels without constipation; an effective and gentle iron with vitamin C source that can be used as an iron supplement for women+
- SUPPORTS RED BLOOD CELL PRODUCTION: These iron supplements for women include folic acid and B12 which help maintain red blood cell production and delivers a gentle and effective 26 mg of iron per serving to combat fatigue and improve energy levels+
- GENTLE & CONVENIENT FORMULA: Blood Builder can be used as iron tablets for women, teenage girls, pregnant women, menstruating women, vegans, vegetarians, athletes, and recent blood donors; Convenient mini tablets
- FLEXIBLE DOSAGE: Take 2 tablets any time of day with a beverage, even on an empty stomach; This iron supplement is suitable for vegan diets; Not intended for children
- 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
$16.99
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
$15.00
MegaFood Blood Builder - Iron Supplement Shown to Increase Iron Levels without Nausea or Constipation - Energy Support with Iron, Vitamin B12 and Folic Acid - 90 Tabs
- Gentle Iron Backed up by science: MegaFood Blood Builder was shown in a 8 week clinical trial to increase iron levels without constipation. A gentle and effective source of iron
- Vital Nutrients: Real food like beets and oranges, with key nutrients like folate, iron, and B12, help to improve energy levels and combat fatigue; Vitamin C supports iron absorption
- Crafted for You: Blood Builder can be used by menstruating women, teenage girls, pregnant women, vegans, vegetarians, athletes, and recent blood donors
- Take Any Time Of Day: Take 1 tablet any time of day with a beverage, even on an empty stomach; Suitable for vegan diets; Not intended for children
- Obsessed with Quality: Tested for over 125 pesticides. Non-GMO Project verified and vegan. Made without gluten, dairy, eggs, tree nuts, peanuts, soy, fish, shellfish or sesame in a GMP facility. MegaFood is a Certified B Corp
$28.98
SALE
−$5.85
NOW Foods Supplements, Iron 18 mg, Non-Constipating*, Essential Mineral, 120 Veg Capsules
- ESSENTIAL MINERAL/FERROCHEL IRON BISGLYCINATE: Iron is an essential mineral that plays central roles in energy production, immune system function, and neurological health
- GENTLE AND NON-CONSTIPATING/VEGAN CAPSULES: NOW uses Ferrochel Iron Bisglycinate, which has clinically demonstrated superior absorption and is well tolerated because it is gentle and non-constipating*
- CERTIFICATIONS/CLASSIFICATIONS: Non-GMO, Halal, Kosher, Dairy Free, Egg Free, Made without Gluten, Nut Free, Soy Free, Sugar Free, Vegan/Vegetarian
- GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation)
- Packaged in the USA by a family owned and operated company since 1968
$7.14
LifeSeasons Blood Nourish-R - Iron Deficiency Supplement - Non Constipating - Supports Anemia, Fatigue, Paleness & Dizziness - Blood Building - Iron, Alfalfa, Beet Root & Vitamin B-12-60 Capsules
- Blood Building Support - Our curated formula relies on natural and non-constipating ingredients to help revitalize and energize to support a healthy blood building process. You can combine this completely natural product with other supplements and medications without risk of adverse side effects.
- Common Results - Most people will see initial effects within one hour, which includes a feeling of more energy and general revitalization. Many people see even greater results when taking this product over a longer period of time, specifically for 1-2 months.
- Targeted Formula - This natural blood-building support supplement is designed to help rebuild blood throughout the body; this supplement provides nutrients and herbs needed to help build healthy blood.
- Clinically-Tested Ingredients - Thoughtfully curated from natural ingredients like Iron, Alfalfa, Vitamin B12, and Beetroot, our formula is designed to help nourish healthy blood building processes. Take this tired blood supplement to help nourish blood building and help to support your overall health.
- The LifeSeasons Standard - LifeSeasons formulates products that combine nature and science to help each person build a foundation for good health. Our ingredients are put through a rigorous testing process to ensure that they are pure, potent, and effective – giving you products to help you achieve your best health results.
$24.99
Polysaccharide Iron Complex 150mg for Anemia Support - Prevention & Treatment of Iron Deficiency, Supports Red Blood Cells Formation, Gentle on The Stomach, High Potency, USA-Made, 100 Capsules
- Focused on What You Need: Unlike liquid iron or ferrous sulfate 325mg supplement diluted with unnecessary vitamins, NexFerrous' vegan high potency iron supplement for women & men provides 150mg of pure, targeted iron to effectively address iron deficiency, your core health concern
- Designed for Iron Deficiency Relief: Our high-potency iron-only formula replenishes iron stores, helping your body produce hemoglobin in red blood cells to carry oxygen, making it ideal for anemia and low iron levels
- Gentle and Stomach-Friendly: Experience a natural iron supplement for women that works without discomfort & has a slow-release formula unlike liquid iron or ferrous sulfate 325mg! no nausea, cramps, or constipation thanks to our innovative non-heme iron formula
- Supports Your Immunity & Pregnancy: Boost immune health and support pregnancy with this vegan blood builder iron supplement for women, ideal for teen girls, those with heavy menstrual cycles, and pregnant women at higher risk of low iron levels
- Vegan-Friendly, Clean Formula: Free from animal by-products, gelatin, and unnecessary fillers, this non-heme iron supplement fits your lifestyle without compromising effectiveness, unlike iron gummies. With small, easy-to-swallow capsules & great value for the price, it’s a smart choice
$19.99
SALE
−$2.00
Active Iron High Potency Iron Supplement, Non-Constipating Gentle Iron Pills for Women & Men, 2X Better Absorption, Clinically Proven to Increase Iron & Energy Levels, 25mg (60 Capsules)
- Why Take Iron Supplements? Active Iron is clinically proven to increase iron and energy levels, reducing fatigue and supporting immunity, cognitive function, and blood building.
- Why Is Active Iron Different? Its whey protein formula allows for 2X better absorption while being gentle on the stomach, preventing nausea and constipation.
- Who Should Take It? Ideal for individuals with iron deficiency, including women with periods, pregnant/postpartum women, athletes, and those at risk of low iron.
- How Does It Work? Clinically proven to increase iron levels by 94% in 6 weeks, supporting hemoglobin formation effectively.
- Suitability: Free from artificial colors, flavors, gluten, and sugar; suitable for vegetarians, pregnant women, and athletes with Informed Sport certification.
$32.95
SALE
−$7.00
NOW Supplements, Iron 36 mg, Double Strength, Non-Constipating*, Essential Mineral, 90 Veg Capsules
- 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, Sugar Free, Kosher, Non-GMO, Halal
- GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation)
- Packaged in the USA by a family owned and operated company since 1968
$7.99
Liquid Iron Supplement for Women, Men & Kids | Non Constipating Vegan Iron Supplements for Anemia, Healthy Blood, Prenatal & Postnatal | Sugar-Free Natural Berry Flavor, Ferrochel® & Vitamin C
- Gentle Iron Supplement for the Whole Family - Mother’s Promise Liquid Iron supplements for men, women, toddlers and kids is important for blood production, cellular health, energy metabolism and overall health and wellness at every life stage.
- Blood Builder Iron Supplement - Iron is crucial for healthy red blood cells, energy metabolism, and oxygen transport. With high bioavailability, this liquid iron supports better absorption to help maintain optimal iron levels.
- Natural Berry Flavor, Sugar-Free - No artificial sweeteners or added sugar—just a pleasant berry flavor that’s easy for kids and adults alike. Designed with your whole family’s health needs in mind.
- Easy-to-Take & High Absorption Formula - Our iron for women, men, teens, kids, and even pregnant women, uses Ferrochel iron chelate for optimal absorption and digestive comfort. Enhanced with Vitamin C for better iron uptake without constipation.
- Quality You Can Trust - Vegan | Third-Party Tested | Zero Gelatin or Animal Products | Non-GMO | Gluten-Free | Dairy-Free | Soy-Free | Allergen-Free | cGMP Certified Manufacturing | Women-Owned Business
$26.95
Iron Supplement for Women & Men, with Vitamins C, B6, B12 & Folate for Iron Deficiency, Blood Building & Energy Support, Stomach Friendly, Better Absorption, Non-GMO, No Gluten, 60 Vegan Caps
- Non-Constipating Iron Bisglycinate: Vitalibre Iron Complex provides 36 mg of elemental iron in a gentle, well-absorbed form as iron bisglycinate (ferrous bisglycinate), which boosts your iron levels without unwanted digestive issues like nausea or constipation.* This iron supplement is great for individuals with increased iron needs, such as menstruating women, pregnant women, vegans, vegetarians, athletes & recent blood donors.*
- 5-IN-1 Blood-Building Formula*: Our gentle iron pills provide the most natural and bioactive forms of blood vitamins including 667 mcg folate (as L-5-MTHF), 30 mcg of methyl B12, and 5 mg of bioactive B6 (P-5-P), the vital nutrients required for hemoglobin formation and red blood cell production, along with 30 mg of natural vitamin C to enhance iron absorption.*
- Boost Energy & Immune Health*: By supporting healthy red blood cells, Vitalibre vegan iron supplement helps boost oxygen transportation, bringing you long-lasting energy, robust immune system, better muscle function, and enhanced workout performance.* Loaded with essential B vitamins and natural vitamin C, this Iron Complex also helps support the conversion of food into energy and promote antioxidant capacity.*
- Highest Quality and Purity: There are no GMOs, artificial ingredients, fillers, binders or preservatives in our supplement. It is also FREE OF soy, gluten, milk, sugar, egg, shellfish, corn, wheat, and peanuts. We're committed to ensuring that every product meets stringent quality control procedures for purity, potency, and safety.
- MADE IN THE USA: Combining nature's nutrients with science-backed formulas, we create our first line of clean supplements to help you make confident choices for your health. We are proud to affirm all Vitalibre products are manufactured in the U.S in facilities that adhere to strict Good Manufacturing Practices (GMP) guidelines.
$16.89
Last update on 2025-05-02 / Affiliate links / Images from Amazon Product Advertising API