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THORNE - Iron Bisglycinate - 25 mg Iron Supplement for Enhanced Absorption Without Gastrointestinal Side Effects* - NSF Certified for Sport - Gluten-Free - 60 Capsules

  • Based on 6,736 reviews
Condition: New
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Availability: Only 5 left in stock, order soon!
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Arrives Thursday, Jul 24
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Features

  • Well-Absorbed Iron: Provides 25 mg of elemental iron per capsule in a non-constipating, well-absorbed form as iron bisglycinate
  • Resists Fatigue: Resists fatigue and other symptoms of iron deficiency, such as weakness, shortness of breath, dizziness, tinnitus, drowsiness, irritability, infrequent menstruation, and loss of libido
  • Blood Support: An essential mineral for the formation of new blood cells
  • NSF Certified for Sport: Tested for compliance with label claims and to ensure the absence of nearly 300 substances banned by many major athletic organizations
  • Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners

Brand: THORNE


Item Form: capsules


Primary Supplement Type: Iron


Unit Count: 60 Count


Flavor: Unflavored


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 2.09 x 2.09 x 3.72 inches; 0.32 ounces


Item model number ‏ : ‎ M226


Date First Available ‏ : ‎ October 1, 2013


Manufacturer ‏ : ‎ Thorne Research


Best Sellers Rank: #846 in Health & Household (See Top 100 in Health & Household) #4 in Iron Mineral Supplements


#4 in Iron Mineral Supplements:


Customer Reviews: 4.6 4.6 out of 5 stars 6,736 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jul 24

This item is non-returnable:

Non-returnable due to Food safety reasons

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • So far, so good — no stomach issues, and that’s a win for me!
I started taking this iron supplement during pregnancy because my hemoglobin levels were low. I haven’t had my blood retested yet, so I don’t know if it has helped my levels — but what I can say is that it’s been really gentle on my stomach. That was my biggest concern! The first couple of days I felt a little nauseous (I’m on a high dose prescribed by my doctor), but that passed quickly. Now I feel fine and have no problems going to the bathroom, which is a huge relief. Honestly, just the fact that it doesn’t cause digestive issues is a win-win for me so far! ... show more
Reviewed in the United States on July 3, 2025 by Claudia 🌺

  • Good brand, take every other day and eat dried plums!
The need to take iron supplements seems to be a family trait. Due to my sister's side effect from various formulations, she finally ended up using Thorne and taking it every other day as some research recommends as more effective. So when I had to start taking iron supplements, I went straight to Thorne and take it every other day. I also eat 3-4 dried plums every morning to counter act one of the potential side effects of taking iron. Doing this takes care of that! I have not been on it long enough to judge the efficacy but seeing how Thorne has helped several family members I have every confidence. ... show more
Reviewed in the United States on June 18, 2025 by VMH

  • Feeling much less cold and tired
I've been using this product for a week and you may think that might not be enough time to leave a review, but I've found that I am not as cold as I used to be. I've been anemic for a while and I am telling you these have sincerely helped with me feeling cold and tired all the time. I will leave more updates as time passes. ... show more
Reviewed in the United States on June 26, 2025 by R Clinton

  • IT works, buy it!
This iron has given me LIFE! I feel so much better, so much warmer these days. Would highly recommend. I can go two days or so without out but when I feel like my breathing is slowed down, I take one and I'm back to feeling better.
Reviewed in the United States on July 2, 2025 by Tao

  • Good Product
So far, so good! Easy to take & more energy.
Reviewed in the United States on June 20, 2025 by Bruce R.

  • Easy to swallow and easy on my gut
Finally, a gentle iron supplement that doesn't cause GI discomfort! Easy to swallow due to a smaller size. I love that it's 25 mg versus a higher dose.
Reviewed in the United States on July 7, 2025 by AZmomma

  • They work great
Was told I had anemia during pregnancy and had low iron. I bought these and within 2 weeks my iron was already up by so much! Never caused constipation or stomach issues with me. It works great
Reviewed in the United States on July 1, 2025 by NightSky

  • Definitely recommend
Best iron for the price
Reviewed in the United States on July 11, 2025 by Nicholas Cieker

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