We Asked RDs What Iron Supplements They Recommend for Women — Here’s What They Said
Our Top Picks for Best Iron Supplements for Women
- Best for Iron Deficiency: FullWell Iron Bump
- Best for Anemia: Thorne Ferrasorb
- Best for Pregnancy: Thorne Iron Bisglycinate
- Best Vegan/Vegetarian: Rainbow Light Complete Iron Mini-Tabs
- Best Budget-Friendly: NOW Iron
- Best for Sensitive Stomachs: Designs for Health Ferrochel
- Best for Athletes: Pure Encapsulations Iron-C
- Best for Immune Support: New Chapter Fermented Iron Complex
- Best Chewable: SFI Health Chewable Iron Chelate
- Best Liquid: Gaia Herbs Plant Force Liquid Iron
- Best With Added Vitamins: MegaFood Iron Blood Builder
When to Consult Your Doctor?
It is always recommended that you speak with your healthcare provider before adding any supplement to your diet to make sure it is safe and appropriate for your individual health needs.
Excessive iron intake can also be dangerous because the mineral can accumulate in your organs, including your liver and heart. This can lead to inflammation, iron poisoning, organ damage, or even death in severe cases. The amount of iron you need can also vary depending on life stage, age, and health status. That’s why a medical provider can help you determine whether you actually need iron supplementation and find the correct dosage.

Best for Iron Deficiency
FullWell Iron Bump
Pros
- Proprietary blend of food-based nutrients to support absorption
- Gentle on the stomach
- CGMP-certified, in-house and third-party tested
- Created by a registered dietitian
Cons
- Provides more than 100 percent of daily value
Key Specs
- Form: Capsule
- Serving size: 1 capsule
- Type of iron: Ferrous bisglycinate
- Amount of iron: 25 mg
- Other key ingredients: Vitamin C, dandelion, nettle

Best for Anemia
Thorne Ferrasorb
Pros
- Comprehensive anemia support
- Highly absorbable chelated iron
- Vitamin C to enhance absorption
- Active B6, B12, and folate for added benefits
Cons
- High iron dose may be too much for some
Key Specs
- Form: Capsule
- Serving size: 1 capsule
- Type of iron: Ferrous bisglycinate chelate
- Amount of iron: 36 mg
- Other key ingredients: Vitamin C, B6, B12, folate

Best for Pregnancy
Thorne Iron Bisglycinate
Pros
- Gentle formula for pregnancy
- NSF Certified for Sport
- Simple ingredient list is safe for pregnancy
Cons
- Provides slightly less than 100 percent of daily value for pregnancy
Key Specs
- Form: Capsule
- Serving size: 1 capsule
- Total iron: 25 mg
- Type of iron: Iron ferrous bisglycinate
- Other key ingredients: None
Quality and safety should always be top priorities when taking supplements, but they are especially essential during pregnancy. Throne products are National Sanitation Foundation (NSF) Certified for Sport, which means each product has been thoroughly tested for purity, potency, the presence of harmful substances, and substances banned by sporting organizations, offering additional reassurance for parents, according to Larner.

Best Vegan/Vegetarian
Rainbow Light Complete Iron Mini-Tabs
Pros
- Vegan- and vegetarian-friendly
- Ginger root and vitamin C for digestion support
- Allergen- and gluten-free
- CGMP and third-party tested
Cons
- High dose may not be appropriate for everyone
Key Specs
- Form: Tablet
- Serving size: 1 tablet
- Type of iron: Iron chelate
- Amount of iron: 30 mg
- Other key ingredients: Vitamin C, nettle, ginger, citrus
The small, easy-to-swallow tabs are also a bonus for those who struggle with ingesting larger pills. A potential drawback is the higher dose of 30 mg, which is higher than some people need. However, for individuals following a plant-based lifestyle who aren’t getting enough iron, Rainbow Light offers a solid solution.

Best Budget-Friendly
NOW Iron
Pros
- Most affordable on our list
- Provides 100 percent of daily value
- CGMP and in-house tested
- Gentle formula
Cons
- No other nutrients to support absorption
Key Specs
- Form: Veg capsule
- Serving size: 1 capsule
- Total iron: 18 mg
- Type of iron: Iron ferrous bisglycinate
- Other key ingredients: None
While this supplement provides 18 mg of iron and is manufactured in a CGMP facility, it doesn’t include additional nutrients, such as vitamin C, which can enhance absorption. However, for those primarily seeking a budget-friendly, straightforward option, it’s a reliable and accessible choice.

Best for Sensitive Stomachs
Designs for Health Ferrochel
Pros
- Gentle iron form for sensitive stomachs
- GMP compliant and NSF certified
- Vegan, non-GMO
Cons
- Provides more than 100 percent of daily value
Key Specs
- Form: Veg capsule
- Serving size: 1 capsule
- Total iron: 27 mg
- Type of iron: Ferrous bisglycinate chelate
- Other key ingredients: None
Each capsule delivers 27 mg of iron bisglycinate per serving. “Many women tolerate Ferrochel on an empty stomach (absorption is best in the morning), but for those who are sensitive, try every-other-day dosing or taking it with food,” recommends Nabielski. This flexibility in dosing makes Ferrochel adaptable to your needs.
Ferrochel is GMP-compliant and NSF Certified for Sport, ensuring it meets strict standards for safety, quality, and purity. It’s also vegan, non-GMO, and free from common allergens, making it adaptable for many dietary restrictions.
One point to consider is that each capsule provides more than 100 percent of the daily recommended value for iron. However, as Nabielski highlights, the high absorption rate means you can effectively meet your needs with lower overall doses compared to less bioavailable forms.

Best for Athletes
Pure Encapsulations Iron-C
Pros
- NSF-certified and third-party tested
- Hypoallergenic, vegan, gluten-free
- Includes vitamin C for better absorption
Cons
- Lower dosage may not suit severe deficiencies
Key Specs
- Form: Veg capsule
- Serving size: 1 to 2 capsules
- Type of iron: Iron glycinate and iron aspartate
- Amount of iron: 15 mg
- Other key ingredients: Vitamin C
For athletes, ensuring supplements are free from harmful contaminants and meet high safety standards is essential, and Pure Encapsulations Iron-C delivers. It stands out for its clean formulation, NSF certification, and rigorous third-party testing. Goldsmith notes that this product also provides vitamin C to support absorption. “It’s hypoallergenic, vegan, and certified gluten-free, making it safe for a large population of people.”
While the lower dosage may be a drawback for those with more significant deficiencies, it aligns with the product’s goal of offering a clean, safe, and adjustable option. This makes it ideal for athletes who need to fine-tune their supplementation to avoid oversupplementation and side effects.

Best for Immune Support
New Chapter Fermented Iron Complex
Pros
- Comprehensive blend of immune-supportive nutrients
- Fermented formula, gentle on the stomach
- NSF certified and third-party tested
Cons
- Best suited for those seeking a multinutrient solution, not just iron alone
Key Specs
- Form: Tablet
- Serving size: 1 tablet
- Type of iron: Ferrous fumarate
- Amount of iron: 9 mg
- Other key ingredients: Vitamin C, E, B12, folate, zinc, maca, chamomile, peppermint, ginger, turmeric
New Chapter Fermented Iron Complex provides only 50 percent of the recommended daily value of iron. While this can be a limitation for those with significant iron deficiencies, it may be ideal for individuals who already obtain some iron through their diet but need a little extra. Pairing this supplement with a diet rich in iron-containing foods can help bridge the gap and meet your daily needs.

Best Chewable
SFI Health Chewable Iron Chelate
Pros
- Cherry-flavored chewable tablet for easy use
- Gentle on the stomach
- Free of common allergens like gluten, soy, and dairy
Cons
- Contains 2 g of added sugars
Key Specs
- Form: Tablet
- Serving Size: 1 tablet
- Type of iron: Ferric trisglycinate chelate
- Amount of iron: 30 mg
- Other key ingredients: None
Of all the chewable iron options we examined, SFI Health (formerly Klaire Labs) Chewable Iron Chelate stood out as our top pick due to its convenience, taste, and dosage. Designed for enhanced absorption and gentleness, this product stands out for offering a nonconstipating, easily digestible form of iron in a cherry-flavored chewable tablet.
This chewable iron supplement offers 30 mg of iron in the form of Albion ferric trisglycinate chelate. Similar to iron bisglycinate, ferric trisglycinate is formulated to be easy on the stomach. The formula is free of common allergens, including gluten, soy, and dairy, making it suitable for a wide range of dietary needs.
The one minor downside to SFI Health chewable iron is the inclusion of 2 g of added sugars, which may not align with stricter dietary preferences. However, this small amount is unlikely to pose a problem for most people who otherwise limit their sugar intake. Overall, this chewable option combines convenience and taste for those who prefer not to swallow pills.

Best Liquid
Gaia Herbs Plant Force Liquid Iron
Pros
- Tasty liquid option in a honey base
- Vegetarian and gluten-free
- Gentle on the stomach
- Made with organic ingredients
Cons
- Priciest on our list
- Some may not want or need extra herbs or botanicals
- Requires refrigeration
- Must be used within four months of opening
Key Specs
- Form: Liquid
- Serving size: 2 teaspoons twice per day for adults
- Total iron: 10 mg
- Type of iron: Ferrous gluconate
- Other key ingredients: Sea buckthorn, acerola, nettle
However, it’s worth noting that the inclusion of extra herbs and botanicals may not be necessary for everyone, particularly those seeking a simple, straightforward iron supplement. Additionally, its price point is higher than many other iron supplements, which could be a drawback for budget-conscious buyers. Overall, Gaia Herbs Plant Force Liquid Iron offers an effective approach to maintaining iron levels in a liquid format.

Best With Added Vitamins
MegaFood Iron Blood Builder
Pros
- Includes folate, vitamin B12, and vitamin C
- Whole-food blend with organic beets, oranges, broccoli, and brown rice
- Gentle on the digestive system
- Third-party tested and Detox Project’s Glyphosate Residue Free certified
- Manufactured in NSF CGMP-certified facilities
- Free of the top nine food allergens
Cons
- May not appeal to those seeking a basic, no-frills iron supplement
Key Specs
- Form: Tablet
- Serving size: 1 tablet
- Type of iron: Fermented iron bisglycinate
- Amount of iron: 26 mg
- Other key ingredients: Vitamin C, B12, folate, beetroot, food blend
If you’re looking for a supplement that contains iron and other key vitamins you need, you might want to consider MegaFood Iron Blood Builder. “MegaFood Iron Blood Builder delivers a gentle yet effective 26 mg of iron per serving and generous doses of folate, vitamin B12, and vitamin C,” shares Mitri. “Another factor that sets it apart is its whole-food blend, which includes organic beets, oranges, broccoli, and brown rice — providing added vitamins and minerals.”
While the whole-food blend offers added benefits, it may not appeal to those seeking a no-frills iron supplement who might question the necessity of all the extra components. Still, for those seeking a high-quality, nutrient-dense product, MegaFood Iron Blood Builder checks all the boxes. Its gentle formulation and real-food-based ingredients make it a standout choice.
Comparison Table
Immune support
How We Reviewed the Best Iron Supplements for Women
To review the best iron supplements for women, we evaluated dozens of products based on key factors, including absorption, formulation quality, certifications like NSF or third-party testing, and dietary suitability for those requiring vegan or gluten-free options.
We also consulted with four registered dietitians, including:
As a registered dietitian, I also bring extensive experience in researching and recommending supplements for readers and clients.
What to Look For When Buying Iron Supplements
Choosing the right iron supplement can feel daunting, but focusing on a few details can help simplify the process. Larner emphasizes the importance of looking beyond the label to ensure you’re getting a product that is safe, effective, and tailored to your needs. Here’s what to consider:
- Third-Party Testing “To have peace of mind when it comes to the purity and wholesomeness of your iron product, make sure it’s been certified by NSF or has some other third-party certification,” advises Larner.
- Iron Form Different forms of iron, such as iron bisglycinate, may vary in how well your body absorbs them. “Verify that the amount and type of absorbable iron in the product will suit your specific needs,” suggests Larner.
- Formulation Options Sensitive stomach? Look for gentle iron formulations, such as liquid or chewable tablets, which can be easier to tolerate.
- Added Ingredients Consider supplements with extras, such as vitamin C, folate, or B12, to boost absorption and provide additional health benefits.
- Clear Dosing Instructions Look for products with straightforward and easy-to-follow dosing guidelines. Larner adds, “Keep an ongoing conversation going with your doctor or other health provider about the amount, type, and frequency you might need.”
What Are Symptoms of Low Iron in Women?
If you’re experiencing any of these signs, it’s essential to consult with a healthcare provider for proper testing and diagnosis.
Who May Benefit From Iron Supplements?
However, it is critical to approach iron supplementation with caution. “Iron is not a supplement to take ‘just in case, because too much iron can be inflammatory. It’s best to test iron levels (including a full iron panel plus ferritin) and supplement according to guidance from your dietitian or healthcare provider,” Nabielski advises.
Who Should Avoid Iron Supplements?
Another group who should proceed with caution? Those who struggle with constipation. “Those who are prone to constipation should discuss the best form of iron to take with their doctor, as certain forms of iron can exacerbate constipation,” Mitri notes. Iron supplements can do wonders for the right person, but they aren’t a one-size-fits-all solution. Know your needs and work with a healthcare professional to determine if they are right for you.
FAQ
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Caitlin Beale, MS, RDN
Author
Caitlin Beale, MS, RDN, is a registered dietitian and freelance health writer with experience in clinical nutrition, education, research, and private practice. Caitlin’s special interests include women's health, gut health, autoimmunity, and reproductive health. Committed to the belief that health information should be accessible to all, she is passionate about empowering individuals to make positive changes for their well-being. Caitlin holds advanced training certificates in women's health and integrative and functional nutrition.
Caitlin was born and raised in northern California, where she resides with her family. An avid lover of sunshine and the outdoors, she finds joy in activities such as visiting the beach, exercising, cooking, and indulging in a good read. You can find Caitlin’s writing in a variety of outlets and brands, including Motherly, Nourish, Signos, Greatest, Pure Encapsulations, Abbott, and Clue, among others.

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