12 Best Iron Supplements for 2024, According to Dietitians



7. Nature Made Iron 65mg Tablets

Best affordable

  • Form: tablet
  • Dose: 1 tablet per day
  • Number of servings: 180 per container

Healthline’s review

Nature Made boasts 65 mg of iron per capsule — that’s 361% of the DV for iron, or the equivalent of 325 mg of ferrous sulfate.

Ferrous sulfate is a common form of supplemental iron with high solubility, meaning that it releases iron ions faster and is therefore easier to absorb.

However, this form of iron is more likely than other forms to cause GI side effects, such as constipation.

The product is verified by United States Pharmacopeia (USP), a third-party organization that tests for aspects of quality such as:

  • purity
  • potency
  • performance

Pros & cons

  • provides a higher dose of iron
  • affordable
  • no artificial flavors or colors
  • gluten-free
  • third-party tested
  • may cause GI side effects such as constipation
  • not suitable for those following a vegan diet

Product details

  • Active ingredient(s) (serving strength): ferrous sulfate 65 mg (361% DV)
  • Certifications: USP verified


8. Thorne Basic Prenatal

Best prenatal with iron

  • Form: capsule
  • Dose: 3 capsules per day
  • Number of servings: 30 per container

Healthline’s review

This prenatal supplement provides 167% of the DV for iron in the highly bioavailable form of ferrous bisglycinate chelate. It also contains many other nutrients important for women’s health, including:

  • vitamin C
  • zinc
  • folate
  • iodine
  • selenium
  • vitamins B6, B12, and D

And although Thorn Basic Prental is designed for people who are pregnant or nursing, it is a well-rounded multivitamin that can also be used for anyone looking for a multivitamin that contains more than 100% of their daily iron needs.

Pros & cons

  • contains a range of nutrients critical for women’s health
  • trusted by healthcare professionals
  • gluten-free
  • free of artificial colors and flavors
  • can be difficult to find at local stores
  • designed for women with higher nutrient needs and may not be appropriate for all women

Product details

  • Active ingredient(s) (serving strength): vitamin A 1.05 mg (81% DV), vitamin C 150 mg (125% DV), vitamin D3 25 mcg (167% DV), vitamin E 33.5 mg (176% DV), vitamin K 100 mcg (111% DV), thiamin 5 mg (357% DV), riboflavin 5 mg (313% DV), niacin 30 mg (167% DV), vitamin B6 12 mg (600% DV), folate 1.7 mg DFE (283% DV), vitamin B12 200 mcg (7142% DV), biotin 50 mcg (143% DV), pantothenic acid 18 mg (257% DV), choline 110 mg (20% DV), calcium 180 mg (14% DV), iron 45 mg (167% DV), magnesium 90 mg (23% DV), zinc 25 mg (192% DV), selenium 50 mcg (71% DV), copper 2 mg (154% DV), manganese 5 mg (192% DV), chromium 100 mcg (222% DV), boron 1 mg
  • Certifications: gluten-free