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

Excellent iron supplement. Thorne Iron Bisglycinate stands out for its high absorption and, most importantly, for being very gentle on the stomach, unlike other forms of iron. It has not caused me nausea or constipation, which is a big plus. The brand’s quality is noticeable: vegetarian capsules, clean ingredients, and an appropriate dosage. Ideal for people with iron deficiency, mild anemia, or anyone looking to maintain healthy iron levels without unpleasant side effects. In addition, the 60-capsule bottle is practical and lasts a good amount of time. I will definitely keep purchasing it and highly recommend it to anyone looking for an effective and well-tolerated iron supplement. 💪✨

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.

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.

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

I switched to this specific brand after reading that iron bisglycinate is supposed to be much easier on the digestive system, and honestly, the difference has been night and day compared to the cheap ferrous sulfate tablets I used to buy. These capsules are quite small, making them very easy to swallow, and I haven't experienced any of the dreaded nausea or constipation that usually plagues me with iron supplements. I really appreciate that Thorne is NSF certified, which gives me some peace of mind regarding purity and ingredients. That said, the cost is significantly higher per serving than what you’d find at a standard drugstore, which is the only reason I’m docking a star. However, if you have a sensitive stomach like I do, the extra expense is probably worth it to avoid the discomfort

I was afraid to start taking iron supplements orally because of the side effects associated with them. With this one, I've tolerated it very well; I haven't experienced any discomfort. The capsule is small and easy to swallow. I recommend it with prior medical advice.

Made me very sick vs my usual iron supplement. This has same type and dose of iron but caused a lot of side effects.

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.

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

Some iron supplements constipate. This one does not. It does the job in a gentle way.

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I have been taking this for a while now and I love it. The best iron supplement I’ve ever taken. There’s no nasty side effects and I feel great.