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RankingsWhat is the best vegan iron supplement?
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Plant-based diets are linked to lower risks of heart disease and type 2 diabetes, but they come with one well-documented nutritional gap: iron. Because plant foods contain only non-heme iron, which the body absorbs less efficiently than the heme iron in meat, vegans are more likely to develop depleted iron stores over time. A good vegan iron supplement can close that gap without the stomach trouble that puts many people off iron tablets.
Our editorial team compared six vegan-friendly iron supplements on the US market, scoring each on dose and absorption, tolerance, value and buyer feedback. Below, we explain why iron matters more on a vegan diet, how much you actually need, and which of these six options earned the top spot.
A chelated bisglycinate with added vitamin C covers the higher iron needs of a plant-based diet while staying gentle on the stomach.
Our top pick is NATURELO – Vegan Iron with Vitamin C, which delivers 25 mg of iron bisglycinate plus 50 mg of vitamin C from whole-food sources in a single capsule. If you want a multi-nutrient formula, MegaFood – Blood Builder adds folate, B12 and beet root.
Why do vegans need to think about iron?
All plant-based iron is non-heme iron, the same form found in fortified cereals and supplements. Unlike heme iron from red meat, non-heme iron competes with phytates, tannins and calcium for absorption, which means your body takes in a smaller percentage of what you eat. A 2016 literature review in the American Journal of Lifestyle Medicine found that vegetarians have a high prevalence of depleted iron stores, with premenopausal women at the greatest risk (Pawlak et al., 2016).
Low iron does not always cause obvious symptoms straight away. Early signs include fatigue, brain fog, brittle nails and pale skin. Left unchecked, depleted stores can progress to iron deficiency anemia, which affects energy, immune function and exercise performance. A simple blood test measuring ferritin (stored iron) is the most reliable way to catch a shortfall before it becomes a bigger problem.
The good news is that a well-chosen supplement can replenish stores efficiently, especially when paired with vitamin C. The key is picking a form that absorbs well and does not wreck your stomach.
How much iron do vegans actually need?
The NIH sets the Recommended Dietary Allowance for iron at 8 mg for adult men and women over 50, and 18 mg for women aged 19 to 50. However, the NIH also notes that the RDA for vegetarians is 1.8 times higher than for people who eat meat, because non-heme iron is less bioavailable (NIH Office of Dietary Supplements). That brings the figure for premenopausal vegan women to roughly 32 mg a day from food and supplements combined.
Reaching that level through diet alone is difficult. A cup of cooked lentils provides about 6.6 mg, a cup of cooked spinach about 6.4 mg, but absorption from these foods can be as low as 2 to 5 % depending on what else is on the plate. This is where a supplement helps: chelated forms such as bisglycinate typically offer absorption rates well above raw plant sources.
The Tolerable Upper Intake Level is 45 mg a day for adults. Exceeding this without medical supervision can cause nausea, constipation and, over time, organ damage. Always base your dose on a blood test rather than guessing.
Hemoglobin tells you whether you are anemic right now. Ferritin tells you how much iron you have in reserve. On a vegan diet, ferritin can drift downward for months before hemoglobin drops, so ask your doctor for a full iron panel that includes ferritin, serum iron and transferrin saturation.
Four ways to absorb more iron on a plant-based diet
1. Always pair iron with vitamin C
Vitamin C converts non-heme iron into a form the gut absorbs more readily. Taking your supplement with a small glass of orange juice, or choosing a formula that already includes vitamin C, can significantly boost uptake. This is especially important for vegans because their entire iron intake is non-heme.
2. Soak, sprout or ferment iron-rich foods
Phytates in legumes, grains and nuts bind to iron and reduce absorption. Soaking beans overnight, sprouting lentils or eating fermented soy products such as tempeh can lower phytate levels and free up more iron for your body to use.
3. Separate iron from tea, coffee and calcium
Tannins in tea and coffee, and calcium from supplements or fortified plant milks, can reduce iron absorption by up to 60 %. Leave at least two hours between your iron dose and these foods or drinks.
4. Consider alternate-day dosing
A 2017 trial in The Lancet Haematology found that taking iron on alternate days led to higher fractional absorption than taking it daily, likely because daily doses trigger a spike in hepcidin, a hormone that blocks iron uptake (Stoffel et al., 2017). If your doctor agrees, an every-other-day schedule may help you absorb more with fewer side effects.
Take iron first thing in the morning on an empty stomach if you can tolerate it. If it upsets your stomach, take it with a small, vitamin-C-rich snack such as strawberries or bell pepper strips.
How we scored these six supplements
We evaluated each product on four criteria, weighted to reflect what matters most when you are rebuilding iron stores on a plant-based diet: Dose and absorption (35 %) covers elemental iron per serving, form bioavailability and whether cofactors such as vitamin C are included. Tolerance (25 %) considers the likelihood of stomach upset based on the iron form and dose. Value (20 %) looks at cost per serving and pack size. Buyer feedback (20 %) draws on verified reviews across major US retailers. Full methodology: how we rank products.
Every product on this list is vegan-friendly: free from animal-derived ingredients, with capsules or tablets made from plant cellulose or other non-animal materials. Scores are strictly ranked from first to last, and each sub-score reflects a verifiable fact in the review below.
Six vegan iron supplements, compared
| Rank | Product | Form & dose | Score | |
|---|---|---|---|---|
| #1Best overall | NATURELO - Vegan Iron with Vitamin C | Iron bisglycinate capsule 25 mg + 50 mg vitamin C | 8.8/10 | Check price |
| #2Best multi-nutrient | MegaFood - Blood Builder | Ferrous bisglycinate tablet 26 mg + folate, B12, beet root | 8.5/10 | Check price |
| #3Best value | Solgar - Gentle Iron | Iron bisglycinate chelate capsule 25 mg elemental iron | 8.2/10 | Check price |
| #4Best organic | Garden of Life - Vitamin Code Raw Iron | Brown rice chelate capsule 22 mg + folate, B12, vitamin C | 7.9/10 | Check price |
| #5Best high-dose | Deva Nutrition - Vegan Chelated Iron | Amino acid chelate tablet 29 mg + B12 | 7.5/10 | Check price |
| #6Best liquid | Floradix - Floravital Iron + Herbs | Ferrous gluconate liquid 10 mg per 10 mL + B vitamins | 7.2/10 | Check price |
NATURELO - Vegan Iron with Vitamin C
A vegan bisglycinate with 50 mg of whole-food vitamin C and organic greens in a 180-capsule bottle.
- Iron25 mg per capsule (ferrous bisglycinate chelate)
- Vitamin C50 mg (L-ascorbate + acerola cherry)
- Alsoorganic beet root, spinach, kale, chard, pumpkin
- Capsulehypromellose (vegan)
- Pack180 capsules (6-month supply)
- you want iron and vitamin C in one vegan capsule
- you need a large bottle that lasts for months
- you prefer a multi-nutrient formula with B12 and folate
- you want a certified organic product
NATURELO pairs 25 mg of iron bisglycinate chelate with 50 mg of vitamin C from L-ascorbate and acerola cherry extract, plus a small dose of organic beet root, spinach, kale and chard. The bisglycinate form is one of the gentlest and best-absorbed options available, and the added vitamin C boosts non-heme uptake further.
The 180-capsule bottle is one of the largest on this list, lasting six months at a daily dose or a full year on an alternate-day schedule. The capsule is hypromellose (plant-based), free from soy, gluten and artificial additives. Buyers on Walmart and Vitacost frequently praise the gentle stomach profile and small capsule size, making it a practical everyday pick for anyone on a plant-based diet.
Where to buy
Prices change often, so we don't show them here: check the retailer for today's price.
MegaFood - Blood Builder
Iron plus folate, B12 and beet root in one vegan tablet designed to support red blood cell production.
- Iron26 mg per tablet (ferrous bisglycinate, FoodState)
- Folate680 mcg DFE
- Vitamin B1212.5 mcg
- Alsobeet root, vitamin C, organic orange
- Pack60 tablets
- you want iron with B-vitamin cofactors in one tablet
- you are rebuilding stores and want a multi-nutrient approach
- you prefer a smaller capsule you can open
- you want a single-ingredient formula
Blood Builder bundles 26 mg of iron with folate, vitamin B12, beet root and vitamin C. B12 is a nutrient vegans often need to supplement separately, so having it alongside iron is a practical bonus. MegaFood uses a proprietary FoodState process that embeds the nutrients in a whole-food matrix for gentler digestion.
The tablet is larger than a standard capsule, which some buyers mention as a drawback. On the other hand, verified reviewers on Amazon frequently note improved energy and good stomach tolerance. "Easy on the stomach and my levels came up fast," writes R. on Amazon. The formula is vegan, non-GMO and clinically studied: a published trial showed it increased iron levels without common side effects.
Where to buy
Prices change often, so we don't show them here: check the retailer for today's price.
Solgar - Gentle Iron
A vegan bisglycinate chelate in a 180-count bottle that keeps the cost per serving low.
- Iron25 mg per capsule (iron bisglycinate chelate)
- Capsulevegetable cellulose
- Suitable forvegans
- Certificationsnon-GMO, gluten-free, kosher
- Pack180 capsules (6-month supply)
- you want a large bottle that lasts for months
- you follow a vegan diet and need certified vegan iron
- you want added vitamin C or B vitamins
- you prefer a whole-food or organic formula
Solgar Gentle Iron delivers 25 mg of iron bisglycinate chelate in a vegetable cellulose capsule labelled "Suitable for Vegans". The 180-count bottle matches NATURELO for pack size, making it one of the most economical options on this list. It is free from gluten, wheat, dairy, soy, yeast, sugar and artificial preservatives.
There is no added vitamin C, so pairing it with a vitamin-C-rich food at the time of dosing will help absorption. Buyer reviews are generally positive for tolerance, though a few report a faint metallic aftertaste. For anyone who needs a long-term, budget-friendly vegan bisglycinate, Solgar is hard to beat on value.
Where to buy
Prices change often, so we don't show them here: check the retailer for today's price.
Garden of Life - Vitamin Code Raw Iron
USDA Organic iron with folate, B12, vitamin C and a probiotic blend in a certified vegan capsule.
- Iron22 mg per capsule (brown rice chelate)
- Vitamin C25 mg
- Folate400 mcg
- Vitamin B12500 mcg
- Alsoprobiotic blend (500 million CFU)
- Pack30 capsules
- you prioritize organic and whole-food sourcing
- you want probiotics alongside your iron
- you need more than 30 days per bottle
- you prefer a well-studied iron form like bisglycinate
Vitamin Code Raw Iron uses 22 mg of iron from a brown rice chelate, paired with vitamin C, folate, B12 and a probiotic and enzyme blend. The formula carries Certified Vegan, USDA Organic and Non-GMO Project Verified badges, which appeals to buyers who want the most natural option available. The capsule can be opened and mixed into liquid.
The main drawback is the 30-capsule bottle, which lasts only a month at a daily dose. The iron form (brown rice chelate) is also less studied than bisglycinate, so there is less published data on its absorption rate. Buyers on Amazon generally report good tolerance, though a few note a grassy taste if the capsule is opened.
Where to buy
Prices change often, so we don't show them here: check the retailer for today's price.
Deva Nutrition - Vegan Chelated Iron
A Vegan Society-registered tablet with 29 mg of chelated iron and added B12.
- Iron29 mg per tablet (amino acid chelate)
- Vitamin B1230 mcg (cyanocobalamin)
- Tabletvegan
- CertificationsVegan Society registered, no soy, gluten, dairy
- Pack90 tablets (3-month supply)
- your doctor has recommended a higher daily iron dose
- you want a product registered with the Vegan Society
- you are sensitive to higher iron doses
- you prefer a capsule over a tablet
Deva is a 100 % vegan brand registered with the Vegan Society, so there is no ambiguity about animal-derived ingredients. Each tablet provides 29 mg of iron as an amino acid chelate plus 30 mcg of vitamin B12 (cyanocobalamin), a useful addition for vegans who may be low in both nutrients. The formula is free from soy, wheat, yeast, gluten, dairy and sugar.
The higher iron content makes this a practical choice when a doctor has confirmed a significant deficiency that needs faster correction. On the downside, the amino acid chelate form is less widely studied for bioavailability than bisglycinate. Some buyers on iHerb report that the tablets are easy to swallow and affordable, though a few mention mild stomach sensitivity at the higher dose.
Where to buy
Prices change often, so we don't show them here: check the retailer for today's price.
Floradix - Floravital Iron + Herbs
A vegan liquid iron tonic with B vitamins and herbal extracts, free from honey, yeast and gluten.
- Iron10 mg per 10 mL (ferrous gluconate)
- Thiamin (B1)2.3 mg
- Riboflavin (B2)3.6 mg
- Vitamin B61.8 mg
- Vitamin B126.8 mcg
- Alsorose hip, chamomile, fennel, spinach extracts
- Serving10 mL twice daily
- you struggle to swallow capsules or tablets
- you want a gentler, lower dose of iron
- you need a higher dose to correct a significant deficiency
- you dislike the taste of liquid supplements
Floravital is the vegan version of the well-known Floradix tonic. Unlike regular Floradix, Floravital contains no honey and no yeast, making it suitable for a fully plant-based diet. Each 10 mL serving provides 10 mg of ferrous gluconate plus B1, B2, B6 and B12, with herbal extracts of rose hip, chamomile, fennel and spinach.
The liquid format absorbs quickly and avoids the swallowing issue that puts some people off tablets. The taste is fruity and mildly herbal. The trade-off is the lower iron dose: at 10 mg per serving, it may not be enough for someone whose ferritin is seriously depleted. Floravital also needs refrigeration after opening and has a shorter shelf life than capsules, which affects the overall value score.
Where to buy
Prices change often, so we don't show them here: check the retailer for today's price.
Who should not take iron without medical advice
You have hemochromatosis or another iron-storage disorder. You take blood thinners, thyroid medication or certain antibiotics. You are pregnant or breastfeeding. You have a history of stomach ulcers or inflammatory bowel disease. Iron supplements can be dangerous for young children: keep them out of reach at all times.
Iron is not a nutrient you should supplement without knowing your levels. Taking iron when your stores are already adequate does not improve energy or performance and can lead to iron overload, which may damage the liver, heart and pancreas. The NIH sets the tolerable upper limit at 45 mg a day for adults from food and supplements combined.
Fatigue on a vegan diet is not always caused by iron. Vitamin B12, vitamin D, zinc and omega-3 fatty acids are all nutrients that can run low on a plant-based diet. If your iron and ferritin are normal but you still feel exhausted, ask your doctor to check these levels as well.
Frequently asked questions
Is iron bisglycinate vegan?
Iron bisglycinate is a chelated form where iron is bound to the amino acid glycine. The glycine used in supplements is almost always synthetic, not animal-derived, but the capsule matters too. Check the label for a vegetable cellulose or hypromellose capsule rather than gelatin. All six products on this list use vegan-friendly capsules or tablets.
Do vegans need more iron than meat eaters?
The NIH recommends that vegetarians consume 1.8 times the standard RDA for iron because non-heme iron is less bioavailable than heme iron. For premenopausal women, that means roughly 32 mg a day from food and supplements combined (NIH).
Can I get enough iron from food alone on a vegan diet?
It is possible but challenging. Good vegan sources include lentils, chickpeas, tofu, fortified cereals, spinach and pumpkin seeds. However, absorption from plant foods can be as low as 2 to 5 %, so you need to eat significantly more than the raw numbers suggest and pair iron-rich foods with vitamin C.
How long does it take for iron supplements to work?
Most people notice improved energy within two to four weeks. Ferritin levels typically take eight to twelve weeks to rise meaningfully. A follow-up blood test after three months helps confirm that stores are rebuilding.
What is the difference between Floradix and Floravital?
Both are liquid iron tonics made by the same company (Salus). Regular Floradix contains honey and yeast extract, which makes it unsuitable for vegans. Floravital is the vegan version: it delivers the same iron dose and B vitamins but replaces honey and yeast with plant-based alternatives.
The bottom line
Vegans face a genuine iron challenge: lower bioavailability, higher recommended intakes and fewer dietary sources of the most absorbable form. A well-chosen supplement, taken with vitamin C and away from absorption blockers, can close the gap efficiently. Start with a blood test, pick a chelated form for the best absorption-to-tolerance ratio, and recheck your ferritin after eight to twelve weeks.
Of the six products we reviewed, NATURELO Vegan Iron with Vitamin C earns the top spot for combining a well-dosed bisglycinate with whole-food vitamin C in a large, vegan-friendly bottle that lasts for months.
NATURELO - Vegan Iron with Vitamin C
- 25 mg iron bisglycinate chelate per capsule
- 50 mg vitamin C from acerola cherry
- 180 capsules, vegan, no soy or gluten
Independent guides to natural remedies and supplements, checked against NHS and EFSA references.