Best Iron for Energy Supplements (2026)
Iron is one of the most essential minerals for maintaining healthy energy levels. It plays a central role in producing hemoglobin, the protein in red blood cells that carries oxygen throughout your body. When iron levels drop, fatigue, brain fog, and low stamina are often the first symptoms. The right iron supplement can restore your energy by supporting oxygen transport and red blood cell production.
Quick Comparison
| Product | Key Ingredient | Form | Best For | Rating |
|---|---|---|---|---|
| Lunakai Vegan Iron Gummies | Iron + Vitamin C, B12 & Folate | Gummies | Best Overall | 4.8/5 |
| Pink Stork Iron for Women | Iron Bisglycinate 18mg | Capsules | Best for Gentle Absorption | 4.7/5 |
| NATURELO Vegan Iron | Iron + Vitamin C & Whole Foods | Capsules | Best Whole Food Formula | 4.6/5 |
| Ancestral Supplements Beef Liver | Grass-Fed Beef Liver | Capsules | Best Whole Food Iron Source | 4.7/5 |
| Bariatric Multivitamin with Iron | 45mg Iron + 21 Nutrients | Capsules | Best High-Dose Iron | 4.5/5 |
| Iron Supplement Gummies (Blood Builder) | Iron + Folate & B Vitamins | Gummies | Best Budget Gummy | 4.5/5 |
| Gentle Iron Slow Release | Slow-Release Iron | Capsules | Best for Sensitive Stomachs | 4.6/5 |
1. Lunakai Vegan Iron Gummies – Best Overall
- Daily Iron Gummies for the Whole Family – Chewable iron supplement for women, men, kids, and teens, formulated to support healthy iron levels, oxygen transport and natural energy throughout the day.
- Gentle Iron for Sensitive Stomachs – Features a well-absorbed, non-constipating form of iron that’s easier to digest than traditional iron pills or capsules. Great for those with low iron sensitivity.
- Complete Iron & Vitamin Blend – With Vitamin C for enhanced iron absorption, B12 for focus and vitality and Vitamin E for antioxidant support. Ideal for everyday wellness and energy.
- Teen, Pregnancy & Nursing Support – A safe iron and B12 supplement for teenage girls, pregnant women and breastfeeding moms, designed for evolving nutritional needs across life stages.
- Flavorful & Easy to Take – Delicious berry-flavored vegan iron gummies with no synthetic dyes or gelatin. Great-tasting and mess-free, perfect for both kids and adults.
Lunakai’s vegan iron gummies combine iron with vitamin C, vitamin E, B12, and folate in one tasty chewable, making it easy to support energy levels without swallowing large capsules.
Each serving delivers a well-rounded iron dose alongside vitamin C to boost absorption and B12 plus folate for additional red blood cell support. The gummy format is vegan-friendly and made in the USA in a GMP-certified facility. The combination of iron with complementary nutrients makes this a standout for daily energy support.
- Pros:
- Includes vitamin C for enhanced iron absorption
- Added B12 and folate for complete blood health support
- Tasty gummy format that’s easy to take daily
- Vegan and made in the USA
- Cons:
- Contains added sugars typical of gummy supplements
- Lower iron dose than some capsule options
Best for: Anyone who wants a convenient, well-rounded iron supplement with absorption-boosting nutrients in a great-tasting gummy.
2. Pink Stork Iron for Women – Best for Gentle Absorption
- Iron for Every Stage of Womanhood: From monthly cycles to menopause, women have unique iron needs, yet nearly 40% of women are deficient, leading to low energy, fatigue, lack of focus or concentration, weakness, and cold limbs. Pink Stork Iron with Vitamin C provides 18 mg of gentle Iron Bisglycinate to help maintain healthy iron levels through every stage of life.
- Why Iron Matters: Women’s iron needs change throughout life. Monthly cycles can deplete iron stores and leave you feeling tired or run-down. During pregnancy, your body needs nearly twice as much iron to support healthy blood volume and oxygen transport. After childbirth, iron replenishment supports recovery and vitality. Hormonal shifts during perimenopause can cause heavier cycles, while menopause may impact iron metabolism — making balanced iron levels key for sustained energy, focus, and overall wellness.
- Immune, Energy, + Cognitive Support: Iron is essential for hemoglobin production, helping transport oxygen throughout the body to support energy, cognitive function, and immune health. Our formula includes Vitamin C for optimal absorption — so your body gets the most from every capsule. We use Iron Bisglycinate, a chelated form known to be non-constipating and easy on digestion — ideal for women who’ve experienced discomfort with traditional iron supplements.
- Expert-Backed + Clean Ingredients: Each vegan capsule provides 18 mg Iron Bisglycinate and 50 mg Vitamin C from Acerola Fruit Extract — with no GMOs, gluten, dairy, soy, or artificial ingredients. Just clean, effective nutrition for women’s wellness. Third-party tested for purity and potency in cGMP facilities.
- Women-Owned, Women-Focused: Pink Stork is proudly women-owned and run — offering vitamins, supplements, and wellness support designed to help women thrive through every phase of life: PMS, pregnancy, postpartum, perimenopause, and beyond. Created by Pink Stork—trusted by thousands of women seeking natural, effective solutions.
Pink Stork uses iron bisglycinate, one of the most gentle and bioavailable forms of iron, paired with vitamin C for optimal absorption without the digestive discomfort common with other iron supplements.
Each capsule provides 18 mg of iron bisglycinate, a chelated form that’s clinically recognized for being easier on the stomach than ferrous sulfate. Vitamin C is included to further enhance absorption. This formula was designed with women in mind but works well for anyone looking for a non-constipating iron option. The 18 mg dose matches the recommended daily allowance for women of reproductive age.
- Pros:
- Iron bisglycinate is highly bioavailable and gentle on the stomach
- Non-constipating formula
- Includes vitamin C for better absorption
- Clean ingredient profile
- Cons:
- 18 mg may not be enough for those with significant deficiency
- Marketed primarily toward women
Best for: Women and anyone who experiences digestive issues with standard iron supplements.
3. NATURELO Vegan Iron Supplement – Best Whole Food Formula
- GENTLE VEGAN IRON SUPPLEMENT: 25 mg of Iron with Vitamin C from Organic Acerola Cherries and Iron-Rich Whole Food Blend including Organic Beet, Spinach, Kale, Swiss Chard, and Pumpkin Seed. Increase energy and decrease fatigue without nausea or constipation.
- ADVANCED BIOAVAILABILITY FOR BETTER ABSORPTION: Our Iron is formulated as Ferrous Bisglycinate Chelate which has nearly 2x more bioavailability than other forms of Iron such as ferrous sulfate, gluconate or fumarate. The addition of Vitamin C further enhances the absorption of our Iron, so you can get better results.
- DOCTOR RECOMMENDED IRON LEVELS: Perfect way to supplement your diet with Iron for healthy red blood cell functions. Designed for individuals with common iron deficiencies such as pregnant women, menstruating girls, vegans and vegetarians, dialysis patients, frequent blood donors, and anemic men or women.
- PREMIUM QUALITY & SAFETY: Unlike cheaper brands this product is Made in a GMP-Certified facility with Premium Ingredients that are Non-GMO, Natural, Gluten Free, Soy Free, Vegan & Vegetarian, and contain NO Coloring, Flavoring, or Preservatives.
- FROM NATURE WITH LOVE: We believe nutrition should come from nature – not a laboratory. We formulate our supplements using only the cleanest, most bioavailable ingredients whenever possible to harness the power of plants for whole food nutrition.
NATURELO pairs plant-based iron with vitamin C and an organic whole food blend, delivering a clean iron supplement rooted in real food nutrition.
This vegan iron formula includes organic fruits and vegetables alongside the iron to support absorption naturally. The whole food approach means you’re getting iron in a context closer to how your body encounters it in food. It’s free from synthetic fillers, GMOs, and common allergens. Each capsule delivers a gentle iron dose suitable for daily maintenance.
- Pros:
- Organic whole food blend enhances nutrient absorption
- Vegan, non-GMO, and free of synthetic additives
- Gentle on the digestive system
- Cons:
- Lower iron dose than therapeutic-level supplements
- Slightly higher price point than basic iron pills
Best for: Anyone who prefers whole food-based supplements with clean, plant-derived ingredients.
4. Ancestral Supplements Grass-Fed Beef Liver – Best Whole Food Iron Source
- TIME-HONORED LIVER SUPPLEMENT: Grounded in traditional wisdom of ancient practices, our grass fed beef liver supplement is rich in nutrients specific to the liver and can promote liver health, energy production, metabolic health, and full-body wellness.
- 100% FREEZE DRIED BEEF LIVER & ORGANS: Freeze-dried to preserve heat-sensitive nutrients, this desiccated liver supplement offers highly bioavailable Vitamin A, B12, CoQ10, Choline, Folate, Hyaluronic Acid, Heme Iron, Copper, Zinc and Chromium.
- WHOLE FOOD NUTRITION SOURCE: Our grass-fed liver health supplement offers nourishment that only whole foods (and whole food supplements) can provide to support the high energy demands of an active lifestyle, plus immune, mood, and joint support.
- NEW ZEALAND AND AUSTRALIAN GRASS FED BEEF: Made in small batches in the USA without GMOs, fillers, or flow agents and third party verified for purity, our supplements are sourced from 100% grass-fed cows, pasture raised without hormones in green fields.
- DENSE NUTRITION FOR HEALTH AND ENERGY: As the founders of the Beef Organ Movement, our mission is to make vital nutrition through the highest possible quality organ consumption accessible for all, putting back in what the modern world has left out.
Ancestral Supplements delivers iron the way nature intended — through grass-fed beef liver capsules packed with heme iron, B12, and other naturally occurring cofactors for energy production.
Each serving of 180 capsules provides grass-fed, pasture-raised beef liver in a desiccated form. Beef liver is one of the most nutrient-dense foods on the planet, naturally rich in heme iron (the most absorbable form), vitamin B12, folate, and vitamin A. This is an ideal option for those who want the benefits of liver without the taste. The heme iron in beef liver is absorbed at rates 2-3x higher than plant-based iron sources.
- Pros:
- Heme iron is significantly more bioavailable than non-heme iron
- Naturally contains B12, folate, and vitamin A
- Grass-fed and pasture-raised sourcing
- No synthetic additives or fillers
- Cons:
- Not suitable for vegans or vegetarians
- Requires taking multiple capsules per serving
Best for: Those who prefer whole food nutrition and want the most bioavailable form of iron from a natural animal source.
5. Beef Organ Supplement for Women – Best for Hormonal Energy Support
- LIVER SUPPORT SUPPLEMENT FOR WOMEN: A special grass fed blend of ovary, uterus, fallopian tube, liver & bone marrow in one easy to take capsule to support a woman’s overall health.
- DESIGNED FOR WOMEN: Our FEM supplement is designed for women, packed with ovary specific vitamins, minerals, enzymes, and peptides.
- BOOST COLLAGEN & RADIANCE: Includes CoQ10, collagen, elastin & B12 to promote healthy skin, strong nails & fuller hair from within.
- BONE MARROW CAPSULES: Each 500mg capsule of Ancestral’s women’s liver supplement contains a bone matrix, bone marrow and cartilage, high concentrations of stem cells, growth factors, and fat-soluble activators.
- PURE & POTENT FORMULA: 100% grass-fed, pasture-raised in New Zealand & Australia, freeze-dried for nutrient retention, with zero fillers or flow agents.
This grass-fed beef organ blend combines liver, heart, and other organs to deliver a broad spectrum of naturally occurring iron, B vitamins, and CoQ10 tailored for women’s energy and wellness needs.
Rather than isolating a single nutrient, this supplement uses a multi-organ approach to provide the full range of cofactors that support energy production and hormone balance. The combination of liver (rich in iron and B12), heart (rich in CoQ10), and other organs creates a synergistic nutrient profile. It’s made from grass-fed, pasture-raised animals with no hormones or antibiotics.
- Pros:
- Multi-organ blend provides diverse nutrients beyond just iron
- Contains naturally occurring CoQ10 from heart organ
- Supports both energy and hormonal balance
- Grass-fed and hormone-free
- Cons:
- Not suitable for vegetarians or vegans
- Organ supplements have a distinct taste if capsules are opened
Best for: Women looking for a whole food approach to iron and energy that also supports hormone balance.
6. Bariatric Multivitamin with 45mg Iron – Best High-Dose Iron
- Post-bariatric Support 21 in 1 — Bariatric multivitamin by NUTRAHARMONY formulated & developed to meet the needs of men and women in post-bariatric surgery of all types. Gastric bypass vitamins containing a complete multivitamin from all essential 21 vitamins and minerals.
- One Per Day — A simple daily supplementation regimen that provides all the necessary nutrients, vitamins, and minerals in just one capsule. One serving of bariatric multivitamin with iron to fill your nutritional deficiencies, saturates the body with main vitamins while following a diet, and supports overall good well-being.
- With 45 mg Iron — A great and effective source to replenish Iron deficiency: bariatric iron fortified formula with Iron to get enough Iron DV% after bariatric surgery. Fortified formula of opurity bypass and sleeve multivitamins supports hemoglobin levels and helps to get enough Iron daily after bariatric surgery.
- Made in USA — Bariatric vitamin supplements does not contain GMOs; it's dairy-free, gluten-free, nut-free, wheat-free, soy-free, nightshade-free, and sugar-free. Also, it’s a perfect addition to your gluten-free lifestyle with post-bariatric support and significant effects.
- Quality Matters — Bariatric vitamins multivitamin an excellent and effortless choice for support your wellness. If you want to share your experience or have questions, message us. Our support team works 24/7. Maintain your health anytime, anywhere with bariatric vitamins with iron!
This all-in-one bariatric multivitamin delivers a substantial 45 mg of iron alongside 21 essential nutrients, making it an excellent choice for anyone who needs higher iron intake to combat fatigue.
Designed for individuals with increased nutritional needs — particularly post-bariatric surgery patients — this formula packs a therapeutic iron dose that’s well above standard multivitamins. It includes B12, folate, vitamin D, and other cofactors that work alongside iron to support energy metabolism. Made in the USA with a comprehensive nutrient profile that covers multiple bases in a single supplement.
- Pros:
- High 45 mg iron dose for those with greater needs
- Includes 21 essential nutrients in one supplement
- Ideal for post-surgical or high-need individuals
- Made in the USA
- Cons:
- 45 mg may be too much for those without significant deficiency
- Higher iron doses can cause digestive discomfort in some users
Best for: Post-bariatric surgery patients or anyone with diagnosed iron deficiency who needs a higher therapeutic dose.
7. Iron Supplement Gummies (Blood Builder) – Best Budget Gummy
- ADVANCED IRON ABSORPTION & DAILY ENERGY BOOST: CNCHEF Iron Gummies feature highly bioavailable Ferrous Bisglycinate Chelate (18mg per serving, 100% DV) paired with 90mg Vitamin C to maximize iron uptake and oxygen transport. Gently supports healthy hemoglobin levels without stomach discomfort, constipation, or metallic aftertaste. Ideal for combating fatigue in children, menstruating women, pregnant/nursing moms, athletes, and vegetarians seeking a fuss-free iron supplement
- SMART NUTRIENT FUSION FOR IMMUNITY & VITALITY: Enriched with 6 essential nutrients: Vitamin B12 (250% DV) and B6 to fuel red blood cell production, Folate (400mcg DFE) for DNA health, Zinc (9mg, 60% DV) to strengthen immune defense, plus antioxidant-rich Vitamin C. This science-backed blend enhances focus in kids, sustains energy for busy adults, and promotes overall wellness across all life stages
- KID-APPROVED BEAR GUMMIES WITH SUGAR-FREE JOY: Cheerful bear-shaped gummies burst with natural peach flavor, sweetened guilt-free with xylitol (no added sugars). Pectin-based, vegan-friendly formula is gentle on tiny tummies and perfect for picky eaters. No artificial colors, gluten, dairy, or GMOs—parents can trust these tasty treats to support growing bones, brain development, and active lifestyles
- GENTLE & INCLUSIVE FORMULA FOR EVERY BODY: Crafted with sensitivity in mind: Non-constipating Ferrous Bisglycinate suits iron-deficient individuals and sensitive stomachs. Soy-free, nut-free, and gelatin-free, our gummies align with vegan, keto, and allergy-conscious diets. Produced in GMP-certified facilities with rigorously tested ingredients for purity and potency everyone can rely on
- FAMILY-FRIENDLY CONVENIENCE, ON-THE-GO WELLNESS: Portable gummy fits effortlessly into hectic routines—ideal for lunchboxes, travel, or post-workout recovery. No water or swallowing struggles; these soft chews delight both kids (4+) and adults. CNCHEF prioritizes your satisfaction, If you are not satisfied with our products for any reason, please contact us at any time!
These iron gummies offer an affordable entry point for daily iron supplementation, combining iron with folate and B vitamins in a chewable multivitamin format designed to support healthy blood production.
The blood builder formula includes iron alongside folate and key B vitamins that play direct roles in red blood cell formation and oxygen transport. The gummy format makes compliance easy for those who dislike swallowing pills. It’s a solid option for maintaining iron levels as part of a daily routine without spending a premium.
- Pros:
- Affordable price point
- Includes folate and B vitamins for blood health
- Easy-to-take gummy format
- Good for daily maintenance
- Cons:
- Lower iron dose than capsule alternatives
- Contains added sugars
Best for: Budget-conscious shoppers who want a simple, pleasant-tasting daily iron supplement.
8. Gentle Iron Slow Release – Best for Sensitive Stomachs
- 【Fast-Acting, Gentle Support】Based on a 90days clinical study, Gynable Iron Plus helped support healthy iron levels within 30 days—without causing constipation. This gentle iron supplement is ideal for those with low iron, helping reduce fatigue and support red blood cell health. Ideal iron supplements for women and men, especially those looking for non constipating iron supplements or iron pills
- 【Complete Blood Support】Iron alone isn't enough—key B vitamins also play a vital role in red blood cell formation. Our gentle 18 mg iron includes bioactive folate, Vitamin B12, and Vitamin B6 for blood production, energy, and cellular health, along with 80mg of Vitamin C to support iron absorption and immune function. This makes it an ideal iron supplement for women to support energy and healthy blood levels
- 【Gentle & Stomach-Friendly】With patented slow-release technology, it delivers 12 hours of gradual absorption. Minimizes nausea and constipation with 8.8x better absorption than other women's iron supplements. Please Consult your physician before use, as individual gastrointestinal tolerance may vary
- 【Precision Dosage Iron】 According to the NIH, women need 18mg of iron daily and 27mg during pregnancy. Because excess iron isn't easily excreted, over-supplementation may lead to a buildup—potentially causing constipation, stomach cramps, liver damage, or hormonal imbalances. These iron tablets are perfect for long-term use
- 【Flexible & Convenient】 Take one small, easy-to-swallow pill daily—anytime. Best between meals for optimal absorption. Individually sealed to prevent oxidation, with no metallic aftertaste. No need to avoid dairy, tea, or caffeine, and no nutrient interactions. Iron supplementation shouldn't be a struggle—choose a supplement designed for your life
Clinically shown to support iron levels with a slow-release delivery system, this supplement minimizes the nausea and constipation that plague many traditional iron pills.
The slow-release mechanism gradually delivers iron over several hours, reducing the GI side effects that cause many people to abandon iron supplementation. This approach maintains steady absorption throughout the day rather than flooding the system with a single large dose. It’s specifically designed for women with anemia or iron deficiency who have struggled with other iron supplements.
- Pros:
- Slow-release formula significantly reduces digestive side effects
- Clinically supported for iron absorption
- Great option for those who’ve had trouble with other iron supplements
- Cons:
- Slow-release capsules should not be crushed or chewed
- May take longer to raise iron levels compared to immediate-release formulas
Best for: Anyone who has experienced nausea, constipation, or other GI issues with standard iron supplements.
How to Choose the Best Iron Supplement for Energy
The most important factor when choosing an iron supplement is the form of iron used. Iron bisglycinate (chelated iron) and heme iron (from animal sources like beef liver) are the most bioavailable and gentlest on the stomach. Ferrous sulfate is the most common and affordable form but frequently causes constipation and nausea. If you’ve had trouble with iron in the past, look for bisglycinate or slow-release formulas.
Dosage matters and should be guided by your actual needs. The RDA for iron is 18 mg per day for women of reproductive age and 8 mg for men and postmenopausal women. If you have a diagnosed deficiency, your doctor may recommend therapeutic doses of 45-65 mg per day. Taking more iron than you need can cause side effects and, in excess, toxicity.
Vitamin C is a critical companion to iron supplementation because it significantly increases non-heme iron absorption. Look for supplements that include vitamin C in the formula, or take your iron with a glass of orange juice. Avoid taking iron with calcium, coffee, or tea, as these can inhibit absorption.
Consider the form factor that fits your lifestyle. Gummies are easy to take but typically contain lower iron doses and added sugars. Capsules deliver higher doses and are more straightforward. Slow-release formulas are ideal for those with sensitive stomachs. Choose what you’ll actually take consistently — the best supplement is the one you use every day.
Frequently Asked Questions
What does iron do for energy?
Iron is essential for producing hemoglobin, the protein in red blood cells that carries oxygen from your lungs to every cell in your body. Without adequate iron, your cells don’t get enough oxygen, which leads to fatigue, weakness, and brain fog. Restoring iron levels improves oxygen delivery and can significantly boost energy, stamina, and mental clarity.
How much iron should I take daily for energy?
The recommended daily allowance is 18 mg for women aged 19-50 and 8 mg for men and postmenopausal women. If you have a diagnosed iron deficiency, your healthcare provider may recommend 45-65 mg per day for a limited period. It’s best to get your ferritin levels tested before starting supplementation, as excess iron can be harmful.
When is the best time to take iron supplements?
Iron is best absorbed on an empty stomach, ideally 1 hour before or 2 hours after eating. Taking it with vitamin C (like a glass of orange juice) enhances absorption. Avoid taking iron with dairy, coffee, tea, or calcium supplements, as these can reduce absorption by up to 50%. If iron upsets your stomach on an empty stomach, take it with a small amount of food.
Are there any side effects of iron supplements?
Common side effects include constipation, nausea, stomach cramps, and dark stools. These are most common with ferrous sulfate and high-dose formulas. Chelated forms like iron bisglycinate and slow-release formulas are designed to minimize these issues. Starting with a lower dose and gradually increasing can also help your body adjust.
Can I take iron with other supplements?
Iron should not be taken at the same time as calcium, zinc, or magnesium, as these minerals compete for absorption. Separate them by at least 2 hours. Iron pairs well with vitamin C, B12, and folate, which is why many iron supplements include these in their formulas. Avoid taking iron with antacids or proton pump inhibitors, which reduce stomach acid needed for iron absorption.
How long does it take for iron supplements to work?
Most people notice improvements in energy and fatigue within 2-4 weeks of consistent supplementation. However, it typically takes 3-6 months to fully replenish depleted iron stores (as measured by ferritin levels). Continue taking your supplement for the full duration recommended by your healthcare provider, even after symptoms improve.
