Best Iron Supplements

Iron is an essential mineral—your body needs it to make proteins in red blood cells that carry oxygen from the lungs to your tissues, organs, and muscles, and to make certain hormones. If you don’t get enough, you might feel tired, struggle to concentrate, and have GI issues. Iron is found in foods like meats, beans, and nuts, but many find it easier to get their daily dose in supplement form, so we identified a few brands to help you get the recommended adult dose of 7-15mg per day. Check with your doctor whether these are right for you.

Most Bioavailable

NOW Supplements Iron Complex


Includes Complementary Botanicals

This iron complex blend is quality-assured and non-constipating, meaning you’re getting the supplements you need without uncomfortable side effects.

What We Liked

Loaded with vitamin C, vitamin B-12, folate, and Ferrochel iron—which is the mineral’s most bioavailable, or easily absorbable, form—you’re sure to maximize your body’s absorption of iron. Plus, it’s certified non-GMO, gluten free, Halal, Kosher, and vegan. Get it here. 

Most Natural

Garden of Life Vitamin Code Healthy Blood


All-Around Support

The natural vitamins, minerals, and organic fruit and vegetable blend in this supplement increase its absorption and bioavailability in your body.

What We Liked

This supplement contains a blend of real whole foods such as apples, beets, broccoli, and carrots which makes getting your iron all the more natural. As a result, you’re naturally supporting healthy hemoglobin levels, blood circulation, homocysteine metabolism (getting rid of an amino acid that is a risk factor for cardiovascular diseases), improving your skin health, and receiving probiotics and enzymes for digestive support. Buy it now. 

Best for Anemia

Nature’s Bounty Iron 65 mg


Powerful & Pure

Maintain energy utilization in the body by supporting your blood and hemoglobin levels with a natural, laboratory-tested tablet.

What We Liked

With 65 mg of dried ferrous sulfate—a common form of iron used to treat anemia—you’re getting a potent dose that works to produce red blood cells, keeping you healthy. Take one daily tablet with food to protect from stomach upset. Buy it here. 

Best for Bulk Shoppers

Amazon Elements Iron 18 mg


A Large Supply

Made with no colors, artificial flavors, or chemical preservatives and being about the same length as a quarter, these capsules are safe and easy to ingest.

What We Liked

Amazon Elements provides more capsules than any of its competitors, keeping you stocked for over 6 months. These capsules are also vegan. Get it now.