

💪 Elevate your energy game with iron that works as hard as you do!
THORNE Iron Bisglycinate delivers 25 mg of highly absorbable iron per capsule, designed to boost red blood cell formation and combat fatigue without gastrointestinal side effects. NSF Certified for Sport and gluten-free, it’s trusted by professional athletes and healthcare practitioners alike, making it the smart, clean choice for sustained energy and wellness.


















| ASIN | B0797GZDZL |
| Best Sellers Rank | #557 in Health & Household ( See Top 100 in Health & Household ) #2 in Iron Mineral Supplements |
| Customer Reviews | 4.6 4.6 out of 5 stars (7,546) |
| Date First Available | October 1, 2013 |
| Is Discontinued By Manufacturer | No |
| Item model number | M226 |
| Manufacturer | Thorne Research |
| Product Dimensions | 2.09 x 2.09 x 3.72 inches; 0.32 ounces |
T**S
Thank you ♥️😍❤️👏🏼🔥💪
I absolutely love Throne Iron vitamins! I’ve tried other iron supplements before, but they often upset my stomach or had a metallic taste. These are completely different—super gentle, easy to swallow, and no unpleasant aftertaste. Within a couple of weeks, I noticed a real difference in my energy levels and overall well-being. I feel less fatigued and more focused throughout the day. Plus, I appreciate that Throne uses high-quality, clean ingredients without unnecessary fillers. If you’re looking for an effective iron supplement that’s easy on digestion and actually works, this is the one! Highly recommend.
A**P
Good and effective!
If you want iron supplements this is probably the best formulation. Doesn’t upset stomach and we did see iron levels improve significantly in a few weeks
A**S
Gentle Iron That Actually Works Without Side Effects Finally Found an Iron Supplement I Can Tolerate
After struggling with iron deficiency for years and experiencing terrible digestive issues with traditional iron supplements, I was hesitant to try yet another product. However, THORNE's Iron Bisglycinate has been a complete game-changer for me. The chelated form truly delivers on the promise of enhanced absorption without the gastrointestinal distress that plagued me with other iron products. What sets this apart is the bisglycinate form - iron bound to the amino acid glycine. This makes it much gentler on the stomach while actually improving bioavailability. I take it on an empty stomach without any nausea, constipation, or stomach upset that I experienced with ferrous sulfate supplements. This alone makes it worth the premium price. The 25mg dosage is perfect for maintenance and gradual improvement. My recent blood work showed steady improvement in iron levels after three months of consistent use, and my doctor was pleased with the progress. I have more energy throughout the day and don't experience the afternoon fatigue that was becoming problematic. THORNE's reputation for quality and third-party testing gives me confidence in what I'm taking. The capsules are easy to swallow, and the bottle is clearly labeled with expiration dates and batch information. No artificial colors, flavors, or unnecessary additives - just pure, effective iron supplementation. While more expensive than drugstore iron supplements, the superior absorption and lack of side effects make this significantly better value in terms of actual results and tolerability. Highly recommend for anyone who needs iron supplementation but has struggled with digestive issues from other products.
C**H
Great product
This is my second order. After taking almost all of the first order, I am very pleased with its performance. No stomach upset or problem, good iron absorption, small - easy to take pills.
R**D
Only iron supplements my GI has been able to handle
I had severe anemia. Doctors told me take FE 65mg elemental iron. I could not tolerate those, even the "slow FE" type. I did my own research on brands, types of iron, bind agents, and helpers to potentate the iron. My symptoms were dizziness, fatigue, vertigo, nausea, neuropathy in my hands, constant stomach ache, and inability to eat much. I told the doctors my stomach didn't do well on the 65mg typical supplement. Based on the information I read (some from Thorne's own marketing team admittedly) I chose this product. So far, so good. Well tolerated and many of the above symptoms disappeared or abated. Why only 4 stars you ask, because with 25mg elemental iron this isn't meeting the dose I need to increase my blood iron levels a much a needed. To be fair, that my bodies fault for not tolerating 65 mg of elemental iron. My doc told me this wasn't good enough if it didn't have 50-65 elemental due to my need. It is obviously improving my anemia due to the rapid relief from symptoms I had for years. The doctor showed me a graph of the last 10 year iron levels from lab work. The wise in iron indeed is not dramatic yet. After reading reviews here I asked the nurse practitioner if I could try taking two of these a day before going to the harsher formulations. She said she didn't know and couldn't immediately find any reference on this formulation that met the office's standards for peer reviewed, published data. We know we often won't find that for supplements since there are no obscene profits or patents on vitamins and supplements (it's a crime they don't tell us the true requirements for vitamin D3 when 10,000IU a day could significantly boost immune in northern states in the winter). The NP said "I advise you to take one with 65mg. I can't say for sure if you should go off label with this formulation." I told her: "I'm going to try it because this has been a game changer in how I feel and has nearly no bad side effects. Just a couple days in to 2 a day. It bothers my stomach a bit more. In fact, about twice as much as one pill (go figure). I'm going to stick with because I think this 2 pills of Thorne Research - Iron Bisglycinate will bring 50 mg Iron Supplement in an effective formula. I just hope it isn't too much. I've bought several Thorne products and I am growing fond and trusting of the brand. I recommend you try these but please get clear info from doctors on severity of your need. The NP suggested I do more research on Iron Bisglycinate and other improved absorption and we will monitor the blood iron levels. FWIW I started this treatment (with one pill) at the same time as Vitamin B12 Cyanocobalamin injections. There was some magic one/two punch with the two treatments that seemed to wipe away years of pain and discomfort. Check you B12, Iron, D and other critical vitamins/minerals. Sometimes the answer is a relative affordable over-the-counter readily available supplement.
K**R
Good product
This was delivered on time. This iron suppliment has not caused stomach upset or any other issues. It seems to be very easy to digest.
M**.
Get this!
This is brilliant and by far the best form it Iron. Its easy on stomach and my iron level went from 40 ng/ml to 107 in just 2 months. It has never been this better in past 5 years. I take 1 tablet every other day (mornings) with vitamin C supplement.
W**E
Thorne Iron Bisglycinate is a total game-changer for anyone who needs an iron boost but dreads the usual stomach drama. It’s gentle on digestion—no cramps, no nausea, and no awkward rush to the bathroom (you know what I mean). I’ve been taking it daily, and my energy levels have noticeably improved, especially during workouts and long days. The capsules are small and easy to swallow, and it’s NSF Certified for Sport, which gives me peace of mind that it’s clean and free from junk. Plus, it’s gluten-free, so no worries for those with sensitivities. The only downside? It’s on the pricier side for an iron supplement, but the lack of side effects makes it worth every penny. Also, you’ll need to pair it with vitamin C-rich foods or drinks to maximize absorption, but that’s an easy fix (hello, orange juice!). If you’re tired of iron supplements that make you feel worse than being anemic, this one’s a must-try. It delivers results without any of the hassle. 4.8/5
I**N
I’ve tried so many supplements over the years, and most of them have upset my stomach. This one is a game-changer! I started taking it a few weeks ago, and it’s been nothing but smooth sailing. No discomfort, no bloating, and no queasiness – even when I take it on an empty stomach.
R**F
انصح به لمن يعاني نقص الحديد و الافضل ان يتم تناول الزنك معه
L**N
Some iron supplements constipate. This one does not. It does the job in a gentle way.
A**R
I like the small caps (1 day ) and helping very fast
Trustpilot
3 weeks ago
2 months ago