What it's for (Indications)
- Iron bis-glycinate (e.
- g.
- , Ferocare) is primarily indicated for the treatment and prevention of iron deficiency and iron deficiency anemia.
- This includes conditions such as nutritional iron deficiency, iron deficiency due to chronic blood loss (e.
- g.
- , menorrhagia, gastrointestinal bleeding), increased iron requirements during pregnancy and lactation, rapid growth in infancy and adolescence, and certain malabsorption syndromes.
- It is also used in individuals with inadequate dietary iron intake, including vegetarians and vegans.
- Its chelated form is particularly noted for its high bioavailability and superior gastrointestinal tolerability compared to traditional iron salts, making it a preferred option for patients who experience significant side effects with other iron preparations.
- Regular monitoring of iron status, including hemoglobin, ferritin, and transferrin saturation, is essential to confirm diagnosis and assess treatment efficacy.
Dosage Information
| Type | Guideline |
|---|---|
| Standard | The dosage of iron bis-glycinate is highly individualized and depends on the severity of iron deficiency, the patient's age, weight, and overall clinical condition. It is crucial to consider the elemental iron content, which can vary significantly between products; many formulations provide 20-27 mg of elemental iron per capsule or tablet. A typical adult dosage for treating iron deficiency anemia might range from 25-50 mg of elemental iron once or twice daily. For prophylactic use or mild deficiency, lower doses may suffice. It is generally recommended to take iron supplements on an empty stomach to maximize absorption, but if gastrointestinal upset occurs, it may be taken with food. However, co-administration with calcium, antacids, or certain foods (e.g., dairy, tea, coffee) should be avoided as they can impair absorption. Treatment duration typically extends for several months after hemoglobin levels normalize to replenish body iron stores, often for at least 3-6 months. Adherence to the prescribed regimen is vital for successful iron repletion. |
Safety & Warnings
Common Side Effects
- While iron bis-glycinate is generally well-tolerated due to its chelated structure and improved absorption pathway, side effects can still occur.
- Common gastrointestinal side effects include nausea, constipation, diarrhea, abdominal discomfort, and dark-colored stools.
- These symptoms are typically milder and less frequent compared to unchelated iron salts.
- Less common side effects may include a metallic taste in the mouth.
- Serious side effects are rare but can occur, particularly with overdose, and include symptoms of acute iron toxicity such as severe abdominal pain, vomiting, diarrhea (potentially bloody), lethargy, and shock.
- Allergic reactions, though uncommon, can manifest as rash, itching, or swelling.
- Patients should be advised that dark or black stools are a normal and harmless consequence of oral iron supplementation and do not indicate gastrointestinal bleeding unless accompanied by other concerning symptoms.
Serious Warnings
- Black Box Warning: While iron bis-glycinate, as an over-the-counter supplement, does not carry a formal FDA Black Box Warning like prescription medications, it is imperative to include a serious warning regarding the significant risks associated with accidental iron overdose. Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6 years of age. This product should be kept strictly out of reach of children. In case of accidental overdose, immediate medical attention should be sought, as acute iron poisoning can be rapidly progressive and life-threatening, leading to severe gastrointestinal distress, metabolic acidosis, cardiovascular collapse, hepatic necrosis, and death. Symptoms of iron poisoning may include severe stomach pain, vomiting, diarrhea (potentially bloody), lethargy, and pallor, followed by a period of apparent recovery before a delayed and more severe systemic toxicity manifests. Education on safe storage and immediate emergency care is paramount.
- Oral iron supplementation requires careful consideration and patient education.
- Patients should be warned that iron products, especially in high doses, can be toxic if ingested accidentally by children.
- This medication should be stored out of reach of children.
- Individuals with hemochromatosis, hemosiderosis, or other iron overload conditions should not take iron supplements, as this can exacerbate their condition and lead to severe organ damage.
- Caution is advised in patients with active gastrointestinal inflammation, peptic ulcer disease, or inflammatory bowel disease.
- Iron can interfere with the absorption of other medications, including tetracyclines, quinolone antibiotics, levothyroxine, and bisphosphonates; therefore, administration should be separated by several hours.
- Conversely, certain substances like vitamin C can enhance iron absorption.
- Iron supplementation is contraindicated in anemias not caused by iron deficiency (e.
- g.
- , thalassemia, sideroblastic anemia) unless a co-existing iron deficiency is confirmed, as it could lead to harmful iron accumulation.
- Patients should be advised about the expected dark stools and to report any severe or unusual side effects.
How it Works (Mechanism of Action)
Iron bis-glycinate is a highly bioavailable form of iron where a ferrous iron (Fe2+) ion is chelated by two glycine molecules. This chelation protects the iron from oxidation and interaction with dietary inhibitors within the gastrointestinal tract, allowing the intact chelate to be absorbed more efficiently. Unlike traditional iron salts that primarily rely on DMT1 (divalent metal transporter 1), the iron bis-glycinate complex is believed to be absorbed via peptide transporters (e.g., PEPT1) in the small intestine. Once absorbed into the enterocytes, the iron is released from the glycine complex. This facilitated absorption pathway contributes to its superior bioavailability and reduced incidence of gastrointestinal side effects, as fewer unabsorbed iron ions are left in the lumen to cause irritation. The absorbed iron then replenishes body iron stores (primarily ferritin), supports erythropoiesis by serving as a crucial component of hemoglobin synthesis, and is incorporated into myoglobin and various essential enzymes involved in cellular respiration.
Commercial Brands (Alternatives)
No other brands found for this formula.