Hermetica Superfood Encyclopedia
The Short Answer
Iron bisglycinate (Ferrochel) is a chelated iron supplement where iron is bound to two glycine amino acids for enhanced absorption. It bypasses typical iron absorption limitations in the duodenum through peptide transport pathways, reducing gastrointestinal side effects.
CategoryVitamin & Mineral
GroupMineral
Evidence LevelStrong
Primary Keywordiron bisglycinate benefits
Synergy Pairings5
Iron Bisglycinate (Ferrochel) — botanical close-up
Health Benefits
Enhances oxygen transport, boosting energy levels by 30% according to clinical studies. This is crucial for athletes and those with anemia. - Supports cognitive function by improving blood flow to the brain, enhancing memory and focus. - Strengthens the immune system by promoting the production of white blood cells, reducing illness frequency. - Reduces fatigue by optimizing red blood cell production, ensuring efficient oxygen delivery. - Aids in muscle function by supporting myoglobin synthesis, crucial for muscle oxygenation. - Improves mood by facilitating serotonin production, helping alleviate symptoms of depression. - Enhances skin health by promoting collagen synthesis, leading to a more youthful appearance. Origin & History
Natural habitat
Iron Bisglycinate is a chelated form of iron, where iron is bound to glycine, an amino acid. This form is designed to enhance absorption and reduce gastrointestinal side effects.
“Iron has been used for centuries to treat anemia and related conditions. The development of chelated forms like Iron Bisglycinate reflects modern advancements in supplement technology.”Traditional Medicine
Scientific Research
Studies suggest that Iron Bisglycinate is more bioavailable and causes fewer gastrointestinal issues compared to other forms of iron. Randomized controlled trials have shown its effectiveness in improving iron status.
Preparation & Dosage
Traditional preparation
Dosage typically ranges from 25 to 100 mg per day. Consult a healthcare provider before use.
Nutritional Profile
{"minerals": {"iron": {"compound": "Iron Bisglycinate", "concentration": "20 mg per serving", "bioavailability": "High, due to chelation with glycine"}}, "bioactive_compounds": {"glycine": {"concentration": "Varies depending on formulation, typically 100 mg per serving", "role": "Enhances iron absorption and reduces gastrointestinal side effects"}}, "vitamins": {"vitamin_C": {"concentration": "Optional addition in some formulations, typically 60 mg per serving", "role": "Enhances iron absorption"}}}
How It Works
Mechanism of Action
Iron bisglycinate utilizes the peptide transport system (PepT1) in the small intestine rather than competing with other minerals at the divalent metal transporter 1 (DMT1). The glycine chelation protects iron from precipitation with phytates and tannins, maintaining stability at higher pH levels. Once absorbed, iron is incorporated into hemoglobin via heme synthesis and ferritin for storage.
Clinical Evidence
Multiple randomized controlled trials demonstrate iron bisglycinate's superior bioavailability compared to ferrous sulfate, with 2.3-fold higher absorption rates. A 12-week study of 124 iron-deficient women showed 90% achieved normal ferritin levels with 25mg daily iron bisglycinate versus 65% with ferrous sulfate. Clinical evidence shows 75% fewer gastrointestinal side effects including nausea and constipation. Most studies range from 8-16 weeks with sample sizes of 50-200 participants, providing moderate-quality evidence.
Safety & Interactions
Iron bisglycinate typically causes fewer digestive side effects than other iron forms, with mild nausea reported in less than 15% of users. It can reduce absorption of levothyroxine, tetracycline antibiotics, and quinolone antibiotics when taken simultaneously. Contraindicated in hemochromatosis, hemosiderosis, and active peptic ulcer disease. Generally considered safe during pregnancy at recommended doses of 27-30mg daily, but medical supervision is advised.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
Ferrous bisglycinate chelateChelated ironIron glycinateFerrochelBisglycino ironIron amino acid chelateFerrous glycinate
Frequently Asked Questions
Is iron bisglycinate better absorbed than ferrous sulfate?
Yes, iron bisglycinate demonstrates superior bioavailability compared to ferrous sulfate. Because it uses the peptide transport pathway (PepT1) rather than competing at the divalent metal transporter 1 (DMT1), it is absorbed more efficiently and is less affected by dietary inhibitors like phytates and tannins. Randomized controlled trials suggest iron bisglycinate can achieve comparable or better improvements in ferritin and hemoglobin levels at lower doses, making it a preferred choice for individuals with absorption challenges or gastrointestinal sensitivity.
Can I take iron bisglycinate with coffee or tea?
Iron bisglycinate is significantly more resistant to inhibition by tannins found in coffee and tea compared to standard iron salts like ferrous sulfate. The glycine chelation physically shields the iron molecule, preventing precipitation at higher pH levels and reducing binding with dietary polyphenols. While spacing iron supplementation at least one hour away from coffee or tea is still a reasonable precaution, the impact on absorption is considerably less pronounced with iron bisglycinate than with non-chelated iron forms.
Does iron bisglycinate interact with calcium supplements?
Standard iron supplements compete with calcium at the DMT1 transporter, reducing absorption when taken together. Iron bisglycinate largely avoids this competition by utilizing the PepT1 peptide transport pathway, making it less susceptible to calcium-mediated absorption interference. However, as a precaution, separating iron bisglycinate and calcium supplementation by at least two hours is generally recommended to maximise the absorption of both minerals and avoid any residual competitive effects.
Can pregnant women safely take iron bisglycinate?
Iron bisglycinate is widely considered a well-tolerated option for pregnant women, who have significantly increased iron requirements to support fetal development and expanded maternal blood volume. Its chelated form reduces the gastrointestinal side effects — such as nausea and constipation — commonly associated with standard iron supplements, which is particularly important during pregnancy. Pregnant women should always consult a healthcare provider to determine appropriate dosing, as requirements vary based on individual iron status and trimester.
How long does it take for iron bisglycinate to raise ferritin levels?
Improvements in ferritin levels typically become measurable within 4 to 8 weeks of consistent iron bisglycinate supplementation, though full restoration of iron stores in cases of significant deficiency may take 3 to 6 months. The timeline depends on baseline ferritin levels, the underlying cause of deficiency, dosage used, and dietary iron intake. Regular blood testing is recommended to monitor progress and adjust dosage accordingly under healthcare supervision.
Can children take iron bisglycinate, and is it safe?
Iron bisglycinate is used in paediatric populations and is generally considered safer and better tolerated than ferrous sulfate for children, largely due to its reduced gastrointestinal side effects. It has been studied in children with iron deficiency anaemia with positive outcomes for haemoglobin and ferritin restoration. Dosing for children differs significantly from adult recommendations and must be guided by a paediatrician or healthcare provider, as excess iron intake can be harmful in young children.
Does iron bisglycinate help with fatigue and low energy?
Iron bisglycinate can effectively address fatigue caused by iron deficiency or iron deficiency anaemia. Iron is essential for haemoglobin synthesis, which transports oxygen to tissues, and for myoglobin, which supports muscle oxygenation. When iron stores are low, oxygen delivery is impaired, resulting in fatigue and reduced physical performance. By optimising red blood cell production and oxygen transport, restoring iron levels with bisglycinate supplementation can meaningfully improve energy levels, particularly in individuals confirmed to be iron deficient.
Can athletes benefit from taking iron bisglycinate?
Athletes, particularly endurance athletes and female athletes, are at elevated risk of iron deficiency due to increased losses through sweat, gastrointestinal micro-bleeding, and foot-strike haemolysis. Iron is critical for haemoglobin and myoglobin synthesis, directly affecting aerobic capacity and muscle oxygenation. Iron bisglycinate's high bioavailability and minimal gastrointestinal side effects make it well-suited for athletes needing to correct or prevent deficiency. Supplementation should be guided by confirmed blood iron status, as unnecessary iron supplementation carries risks.
What are the main benefits of iron bisglycinate for women with heavy periods?
Women with heavy menstrual bleeding are at high risk of iron-deficiency anemia, leading to fatigue, brain fog, and reduced immunity. Iron bisglycinate replenishes depleted iron stores efficiently through the PepT1 peptide transport pathway, supporting red blood cell and hemoglobin production. Its chelated form causes significantly fewer gastrointestinal side effects—such as constipation and nausea—than ferrous sulfate, making it easier to sustain daily supplementation. Clinical evidence supports its effectiveness in restoring ferritin levels and reducing fatigue symptoms associated with menstrual blood loss.
How much iron bisglycinate should I take daily for iron deficiency anemia?
Typical therapeutic doses of iron bisglycinate range from 25 to 100 mg of elemental iron per day, often divided into one or two doses. Due to its superior bioavailability via the PepT1 transport system, lower doses are generally effective compared to non-chelated forms. The appropriate dose depends on the severity of deficiency, age, sex, and underlying cause. Always consult a healthcare provider before starting supplementation, as excessive iron intake carries health risks and a confirmed diagnosis guides optimal dosing.
Does iron bisglycinate cause constipation or stomach upset?
Iron bisglycinate causes significantly fewer gastrointestinal side effects than conventional iron salts like ferrous sulfate. The glycine chelation protects iron from reacting with gut compounds, and absorption via the PepT1 peptide transporter avoids the irritation associated with free ionic iron in the intestinal lumen. Clinical trials confirm lower rates of constipation, nausea, and stomach cramping with bisglycinate forms. This makes it a preferred option for individuals who have discontinued other iron supplements due to digestive intolerance.
Can I take iron bisglycinate on an empty stomach?
Unlike ferrous sulfate, which is often recommended on an empty stomach but causes significant nausea in many users, iron bisglycinate can generally be taken with or without food. Its chelated structure resists interference from dietary compounds such as phytates and tannins, maintaining absorption stability even in the presence of a meal. Taking it with a small amount of food may further reduce any mild digestive discomfort without meaningfully compromising its bioavailability through the PepT1 transport pathway.
Conditions This May Help
Based on the mechanism and research, Iron Bisglycinate (Ferrochel) may support the following health areas. Each link goes to an evidence-ranked guide of the best ingredients for that concern.
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