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Low in energy? You could be low in iron. Our top-selling iron supplement is clinically shown to increase iron levels without nausea or constipation.† Crafted with real food like organic oranges and key nutrients like B12 to combat fatigue plus vitamin C to support iron absorption.† Gentle enough to take anytime of day.
Clinical Study Results
1 serving of Blood Builder per day for 8 weeks was shown to significantly increase energy and decrease fatigue. †
Read the Clinical StudyBlood Builder supports red blood cell production, improves energy levels & combats fatigue; ideal for those with higher Iron needs, including menstruating women, teenage girls, vegans & vegetarians, athletes & recent blood donors+
Yes. This Iron supplement for women & men was shown in an 8-week clinical trial to increase Iron levels in individuals with low Iron without causing GI side effects, like nausea or constipation; it is gentle enough to be taken on an empty stomach+
Each serving provides 26mg of Iron; Blood Builder is formulated with high-absorption Iron Bisglycinate (better absorbed than non-chelated forms of Iron, such as ferrous sulfate), and Vitamin C to support Iron absorption & immune health+
Adults take one convenient tablet daily with a beverage; May be taken any time of day, even on an empty stomach; do not exceed recommended intake; consult your physician before use if you’re on medication or have a medical condition.
Yes. Blood Builder is vegan, non-GMO, gluten-free, Kosher, third-party tested for over 150+ chemical substances, and made without the top nine food allergens—wheat, dairy, eggs, tree nuts, peanuts, soy, fish, shellfish or sesame.
Iron is an important mineral, helping deliver oxygen from our lungs to our entire body. Without adequate iron stores, you may not be able to get enough oxygen delivered to all your tissues, which could result in fatigue, muscle weakness upon exertion, pale skin and inability to stay warm.
According to the CDC, 1 in 10 women is at risk for an iron deficiency.
Low iron can be a result of low dietary intake, poor absorption and/or excessive blood loss over time, increased demand during pregnancy.
Obtaining enough iron is often easier said than done, especially if you’re on a vegan or vegetarian diet. Additionally, it’s important to note that iron relies on other nutrients, like vitamin C, to properly absorb into the bloodstream.
We also offer Blood Builder Minis (a convenient mini tab version of Blood Builder) and Blood Builder Liquid Iron One Daily (a convenient, once-daily liquid iron format).
We recommend taking a daily multivitamin to help address any gaps in your diet and support your optimal health. † We also have supplements to support a range of health needs, like Immune Health, Sleep & Stress,Digestion, Healthy Aging and more. Check out our family of premium, quality vitamins & supplements.
Overall rating: 4.7422996 / 5 from 974 reviews.
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"Great iron supplement. Does not cause any GI upset for me and I take it on an empty stomach before bed. My ferritin level has significantly improved since starting this supplement. It is definitely worth the cost. Will continue to purchase!"
"This was gifted to me after I was found to have low ferritin levels. I have tried so many different formulations of iron and never seem to tolerate any. This is so much better than any of the others I’ve tried. It doesn’t seem to cause constipation, the pills aren’t too big and they are easy to swallow, it’s vegan and filled with other vitamins such as C (which helps with absorption). It does seem to cause me minor nausea and have a slightly metallic taste (but I mean, it’s iron, what do you expect?!) I haven’t had bloodwork yet to see if it’s worked but they did find a study which showed good data that it does indeed work. I plan to suggest this to my patients if my levels increase."
"As a regular platelet donor at our local Children's Hospital, I was always dismayed if my iron level was too low for the protocol. One of the phlebotomists there recommended that I replace my iron supplement with Blood Builder, and now I always pass the screen. I also feel better than I did with any other iron supplement I'd ever tried before. Since chemotherapy chews up platelets faster than PacMan gobbles up dots, Blood Builder helps me keep those platelets going to those kiddos who so desperately need them. Blood Builder helps save lives!"
"Mega food blood builder iron supplement is the only one I can take to help boost my iron with stomach problems. My iron is typically on the lower side and this supplement has been just right. I take it on occasions where I feel my iron is low or a day before I donate blood."
"My doctor recommended these supplements after I found out I had low ferritin, and truly these have been a life saver. I don’t have any negative side effects, and I have improved energy and feel overall much better when I take these. I recommend them to all my friends struggling with iron deficiency. Highly recommend!"
"Ever since starting this supplement I have noticed that I do not get as cold at work as much. I love everything by this brand."
"Blood Builder has done wonders for me. I've been hit with a bad bout of arthritis in 2024 and was put on medication. My count has tipped downward some after maintaining a steady and perfect count since I started the therapy years ago. This month I am due for a retest and follow-up with my Hematologist. There were a few days where I have forgotten to take my supplements which may have contributed to that fact. I have once again been faithful in my scheduling consumption and have no doubt my count has risen to the perfect levels it has maintained since the beginning. Thank you MegaFood. I would like to explore a quality of B12 or a all B complex so any info you can send my way would be great."
"I got SO sick after just taking one pill. Severe headache and nausea."
"Fantastic results! I feel so much stronger!"
"I tried a lot different irons, and I like that this one does not stain my teeth, does not make me constipated, and does not make me nauseous. I do try to make sure I have something on my stomach or I’m going to eat soon after I take it, but this has been the least problematic iron I’ve tried"
