THORNE - Advanced Iron Complex - Complete Blood Support Formula* - Elemental Iron, Folate, B and C Vitamins for Optimal Absorption - Chelated Iron Supplement - Gluten, Dairy & Soy-Free - 60 Capsules

This one is effective. It has a blend of things that make the iron very absorbable so it's not a waste, and it does not cause constipation, although it may darken fecal matter. It definitely increases energy to a more normal feeling, and grip strength as well as more normal body warmth consistency. I'm glad I looked around at many kinds before deciding, and checked what makes an iron supplement effective and easier on the body. This is a quality option, and if you want to get results, you can't pick some cheap junk. You get what you pay for here.

I’ve been taking Thorne Advanced Iron Complex for a few weeks, and I’m very impressed. This supplement provides a reliable dose of iron without the common side effects like stomach upset or nausea. I’ve noticed increased energy levels and a better overall sense of well-being. I appreciate Thorne’s commitment to quality and clean ingredients, which gives me confidence in what I’m putting into my body. It’s a great option for anyone needing to support their iron levels naturally and effectively. Highly recommend—five stars!

Listen up! Great price and supplement. The labels on these vitamins need to have instructions from a professional. This product needs to be taken on an empty stomach with orange juice. Or just water. Do not take this with food or it completely cancels out its properties and absorption. Then don’t eat food for 2 hours after for complete benefits. Also, can’t take with coffee!!!! If you need morning coffee, wait the 2 hours after drinking to take it. Why don’t labels tell you this? Use vitamins correctly and they work; if you don’t they don’t, and you’re wasting money.

This Iron Complex has no side effects that I have felt. I needed to increase my iron and this has worked. It is a good value and is so easy to swallow the pill. I do feel a little better. It does not taste bad.

These work really well. The stuff I was getting for the grocery store just wasn’t cutting it so this is a great upgrade

I love how small the capsules are which make them easy to take. Additionally these have such a high dose of iron which I need as I have iron deficiency anemia. However, even though it’s said that this is easier on the stomach, I’ve been experiencing some constipation while taking them. I’ve been using them for approximately 5 weeks and I take them with a vitamin c capsule. I drinks lots of water daily, eat lots of fruits and have a pretty good diet. Before starting these I’d have regular bowel movements of at least once every day. Since starting them it’s been far less frequent. I’ve definitely noticed a difference in my energy levels and I’m no longer as fatigue as I used to be. Also noticed some color coming back to the palm of my hands and below my eyes so they are working. Still I’m not sure that I would repurchase because the constipation is uncomfortable. Hope this helps. Update: I recognized that I don't get constipation when I take it without the vitamin C tablets. I'm three months in and my hair has stopped excessively shedding. I will be purchasing again because I feel like it's working well.

I had been taking iron supplements for over a year with little to no improvement in my labs. Still experienced head rushes upon standing, stomach discomfort, heart palpitations, and overall not tolerating regular supplementation. Could be placebo affects, but I have noticed less head rushes, improved sleep, NO heart palpitations, and Thorne is very gentle on the GI system. I am excited to see if there are improvements in my next lab panel. Will continue to take daily.

I had all the usual symptoms: dull skin, wickedly painful heavy periods, depressing thoughts, low ferritin levels etc. After six days of using, the color in my face and hands came back. All of the symptoms I would typically get a week before my period never showed up, my flow and cramping was back to normal. It’s been three months since I started taking this and my hair is starting to thicken up again. My ferritin levels are also up and I haven’t had any issues with cold feet/hands. I started with two pills a day for the first month and switched to just one pill a day. I usually take it with a shot of orange juice or with a mandarin two hours before I eat anything else (or two hours after I eat), that includes coffee. Especially coffee. The pill obviously has a metallic taste so it’s best to swallow it immediately and not let it sit on your tongue. Sometimes I’ll burp and taste metal but it’s fine and doesn’t last long. It does make my poop black though, and smell weird, it frightened me at first but my doctor told me that’s normal. I’m going to keep purchasing this until my doctor tells me I can stop. HIGHLY recommend. Edit March 31, 2026: I no longer need to take an iron supplement. So an issue that I struggled with for years has been fixed in ≈ 4 months. I’m sticking with this company going forward.

good

I have been using Thorne Ferrasorb for two months now and while intially it worked great and I felt so much better and the pills were gentle on stomach, with no side effects, the second month didn't work well. I am now getting hurt burns and nasty metallic taste after taking the pills, even with food or after full tummy.

Nothing to add

Bad stomach constipation diarrhoea common issues with this tablet. Don’t use it its worse

Effective and bang for the buck vitamin