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# Ferrous Ascorbate
## Overview
Ferrous ascorbate is a chelated form of iron consisting of ferrous iron and ascorbic acid (vitamin C). The presence of ascorbic acid facilitates the reduction of ferric iron to ferrous iron and promotes absorption in the small intestine, potentially improving bioavailability and reducing gastrointestinal side effects compared to standard ferrous sulfate.
## Primary Indications
* Iron deficiency anemia.
* Prophylaxis of iron deficiency in high-risk groups (e.g., pregnancy, menstruation).
## Adult Dosing
* **Therapeutic:** Typically 100 mg to 200 mg of elemental iron per day, usually divided into 1 to 2 doses.
* **Prophylactic:** 50 mg to 100 mg of elemental iron daily.
* *Note: Dosing varies by brand concentration; always calculate based on elemental iron content.*
## Pediatric Dosing
* **Children (≥ 6 months):** 3–6 mg/kg/day of elemental iron, divided into 1–3 doses.
* *Note: Precise dosing depends on local institutional protocols and the specific severity of iron deficiency.*
## Dose Adjustments
* **Renal Impairment:** Generally not required, but use caution in patients with end-stage renal disease or those on dialysis who may have altered iron kinetics.
* **Hepatic Impairment:** No specific adjustments provided by manufacturers; evaluate overall iron panel for risk of overload.
## Contraindications
* Hypersensitivity to any component.
* Hemochromatosis, hemosiderosis, or hemolytic anemias.
* Patients receiving repeated blood transfusions or parenteral iron therapy.
## Adverse Effects
* **Gastrointestinal:** Nausea, abdominal pain, constipation, diarrhea, and dark/black stools (expected).
* **Other:** Staining of teeth (if using liquid formulations).
## Key Drug Interactions
* **Absorption Inhibition:** Separate administration by 2 hours from antacids, calcium/magnesium supplements, PPIs, H2-receptor antagonists, and fluoroquinolones or tetracyclines.
* **Levodopa/Methyldopa:** Iron may decrease the absorption/efficacy of these agents.
* **Thyroid Hormones:** Separate from levothyroxine by at least 4 hours to prevent chelation.
## Monitoring
* **Efficacy:** Hemoglobin and hematocrit levels should be checked after 2–4 weeks; ferritin levels at 3 months.
* **Safety:** Monitor for signs of gastrointestinal distress or iron overload in susceptible individuals.
## Clinical Pearls
* **Bioavailability:** Best absorbed on an empty stomach, but may be taken with food to improve GI tolerability if necessary.
* **Vitamin C:** The inherent ascorbate component may provide a slight advantage in clinical absorption efficiency over non-chelated salts.
* **Toxicity:** Iron overdose is a medical emergency, particularly in pediatric populations. Store out of reach of children.
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**Disclaimer:** This information is for educational purposes only. Clinical practice guidelines and individual patient needs vary. Always consult the latest clinical resources, institutional protocols, and current prescribing information (e.g., package inserts or drug databases) before making therapeutic decisions.
