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

As a personal trainer and nutrition coach, I’m pretty intentional about the supplements I use and recommend. I started taking Thorne Iron Bisglycinate because my ferritin wasn’t technically out of range, but it was on the low end, and I wanted to support my iron levels without upsetting my gut. This has been one of my favorite forms of iron because it has been very easy on my stomach compared with the ferrous iron products I’ve tried. Since taking it consistently, I’ve noticed better energy, less hair shedding, and healthier hair growth. I also haven’t experienced the anxiety or other issues I was having before. I’ve recommended iron bisglycinate to clients who don’t tolerate traditional ferrous iron well, and several have told me they felt better and noticed improvements in their energy and ability to get through their workouts. A few have even mentioned improvements in libido. Obviously, everyone responds differently to supplements, but based on my own experience and the feedback I’ve received from clients, this is one I feel comfortable recommending when someone is looking for a gentler iron option

I recently started seeing a functional medicine doctor to address some issues I've been having and the first they had me do was a full blood workup. When the results came back one of the most glaring issues was my blood iron (ferritin) level. Ideal levels for a woman my age should be 100-150+ ug/L. My level was 18!! The doctor asked me how I managed to get out of bed in the morning and how I can go up and down stairs without fainting, let alone live my life! It's amazing how you can get used to such a poor quality of life when it creeps up on you and you don't know any different. I immediately started taking iron at triple the recommended dose to make up for my severe deficiency and stop the 'iron leak' I seem to have in my body. After bouncing around between a few different supplements, I have settled on this one and I love it! I take 2 per day (that's what my doctor recommended even though the bottle says 1) and I no longer get dizzy and light headed, I don't bruise as easily as I used to and I just feel so much better over all! If you're deficient in iron, some of the symptoms you might experience are fatigue, dizziness, shortness of breath, difficulty concentrating, difficulty regulating body temperature or often feeling cold, pale skin, heart palpitations, shortness of breath, headaches, hair loss, restless leg syndrome, itchiness, more frequent bouts of illness and ringing, hissing or buzzing in your ears. My doctor says almost EVERYONE is deficient in iron, so this might be something you should take even if you're NOT experiencing these symptoms! One of the reasons I chose this particular brand is because it uses a chelate which is more highly absorbable by the body than cheaper carbonates, oxides, sulfates and phosphates and it doesn't have a bunch of crap additives in it. Additionally, the pills are TINY and super easy to swallow! I use some other Thorne supplements as well and really like them. That being said, not ALL of Thorne's stuff is the best of the best, but when it comes to my iron levels, this has worked wonders and I can definitely recommend! I sincerely hope this review has been helpful to someone else! And yes, I pay full price for this. I get it monthly in my subscribe and save. Feel free to ask any questions!

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.

Fantastic! I showed these to my Dietitian and she said they were perfect for me because they are bio available, so they wouldn’t be hard for my body to digest. I’m so glad I got them. After taking them for just a week I already noticed an increase in my energy!

I took this consistently every evening with a cup of orange juice for the past 2 1/2 months and my ferritin level jumped from 12 to 35!!! The capsules aren’t very big and are easy to swallow. No upset stomach. No constipation. I timed my doses so that I didn’t have any coffee or dairy an hour or two before or after since they interfere with absorption. Highly recommend!!!

Most of my life, different iron supplements have made me constipated, since I started using Thorne I wasn't constipated and a regulated bowel movement.

I originally chose THORNE’s iron supplement after doing quite a bit of research, especially because I was concerned about how iron supplements can affect digestion. I was looking for something that would be effective but also gentle and easy on the stomach. Honestly, I didn’t expect such a noticeable result. My iron level was very low — around 15 — and after taking this supplement consistently for approximately three months, along with eating more meat and other iron-rich foods, my level increased to around 40. I’m genuinely impressed with the results. I can proudly say that this supplement has worked really well for me, and I’m definitely going to continue purchasing it to maintain and further improve my iron levels. For anyone who is looking for an effective iron supplement that is also gentle on digestion, I would definitely recommend giving THORNE a try.

I have a sensitive stomach. Most medications cause my stomach to feel unsettled or nauseous. During my research for an iron supplement I discovered Thorne. I have taken this supplement with a class of orange and little food in my stomach. I had a little GI upset, but after a few days I have no GI issues. I definitely recommend this supplement.

These are gentle on the stomach but beware of oxidation. I had them for around a year and by the end and after comparing to the new pack, these were completely oxidized (brown) and probably completely ineffective. Best to use them up quickly.

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毎日の食生活だけでは鉄分が不足しがちだと感じ、継続しやすいサプリメントを探して購入しました。ビスグリシネート鉄を使用しているためか、一般的な鉄分サプリよりも飲みやすく感じ、毎日無理なく続けられています。カプセルも大きすぎず、水と一緒にスムーズに飲めました。 1日1カプセルで必要な鉄分を手軽に補えるので、忙しい日でも習慣にしやすい点が気に入っています。60粒入りで約2か月分あるため、コストパフォーマンスも悪くありません。 一方で、海外製サプリということもあり、価格は国産製品と比べるとやや高めに感じました。また、サプリメントは即効性を期待するものではなく、継続して取り入れることが大切なので、数日で変化を求める方には向かないと思います。 品質や飲みやすさを重視したい方には選択肢の一つになるサプリメントだと感じました。

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’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.