10 Best Iron Supplements 2025 in the United States

THORNE Ferrasorb offers a comprehensive iron supplement that seems well-suited for adults experiencing iron deficiencies. It provides 36 mg of elemental iron in each capsule using iron bisglycinate, a form known for being well-absorbed and less likely to cause constipation compared to other iron types. The inclusion of vitamin C, vitamin B6, vitamin B12, and folate enhances iron absorption and supports blood health, making it particularly effective for those dealing with symptoms like fatigue or dizziness due to iron deficiency.

The supplement is also gluten-free, a plus for those with dietary restrictions. However, while the addition of these essential nutrients is beneficial, users should be mindful of potential side effects such as gastrointestinal discomfort, which can occur with any iron supplement. Each bottle contains 60 capsules, making it easy to integrate into a daily routine.

THORNE, a trusted brand endorsed by various professional teams and partnered with the Mayo Clinic, adds a layer of credibility to the product. This supplement seems particularly beneficial for adults needing a reliable and gentle iron supplement to boost their iron levels and energy, but it's important to follow dosage recommendations to avoid adverse effects.

The Designs for Health Ferrochel Chelated Iron supplement uses Iron bisglycinate, providing 27 mg of iron per capsule. This type of iron is known for its high absorption rate, which can help improve iron levels in the body efficiently. One of the standout features is that it is easier on the stomach compared to other iron supplements, reducing the risk of common side effects like constipation and gastric upset. This makes it a suitable option for individuals who have had issues with other iron supplements in the past.

Additionally, it is safe for a wide range of users, including pregnant women, teens, and lactating women, which adds to its versatility. The capsules are also vegan, non-GMO, and free from gluten, dairy, and soy, accommodating various dietary preferences and restrictions. This product is backed by over 50,000 doctors and has been manufactured by Designs for Health, a company with a long-standing reputation in the health supplements market.

However, it does not include additional nutrients that some other iron supplements might offer, which could be a consideration for those looking for a more comprehensive multivitamin. The product has a high rank in the health and household category, indicating its popularity. It comes in a count of 120 capsules, providing a good supply for consistent use. This iron supplement is particularly beneficial for those seeking a high-absorption, stomach-friendly option, especially for pregnant women and individuals on restrictive diets.

Garden of Life Vitamin Code Raw Iron is a vegan-friendly iron supplement providing 22mg of iron per capsule, which aligns well with the typical daily needs for many women. It comes in an easy-to-swallow capsule form and includes additional nutrients such as vitamins C, B12, and folate—ingredients known to support iron absorption and overall energy. The supplement also contains probiotics and prebiotics, which are commonly associated with digestive health but may benefit gut health and indirectly support nutrient absorption.

The presence of vitamin C can help improve iron uptake, which is advantageous. Side effects commonly linked to iron supplements, such as stomach upset or constipation, might be reduced here thanks to the probiotics, though individual responses can vary. The supplement is Non-GMO, gluten-free, and made in the USA, enhancing its appeal to those seeking clean labels. The bottle contains 30 capsules, designed for once-daily intake, offering convenient dosage.

This supplement may be a suitable choice for women looking for a gentle, multi-nutrient iron product with added digestive support. Those needing a specific iron type or higher dosage might want to consider other options.