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# Ferrous Ascorbate
## Overview
Ferrous ascorbate is an iron salt complexed with ascorbic acid (vitamin C). The addition of ascorbic acid serves to decrease the gastric pH and act as a reducing agent, which promotes the conversion of ferric iron to the more absorbable ferrous state, potentially enhancing bioavailability and reducing local gastric mucosal irritation compared to other oral iron formulations.
## Primary Indications
Treatment and prophylaxis of iron-deficiency anemia and latent iron deficiency.
## Adult Dosing
* **Treatment of Iron Deficiency:** 100 mg (elemental iron) once or twice daily.
* **Note:** Dosing is site- and provider-dependent based on the hemoglobin deficit and severity of anemia. Maximum recommended daily dose is typically 200 mg elemental iron, though higher doses lead to diminished absorption due to the hepcidin response.
## Pediatric Dosing
* **Treatment:** 3 mg/kg to 6 mg/kg of elemental iron daily, divided into 1–3 doses.
* **Note:** Consult institutional pediatric protocols for precise age-based adjustments and formulation availability.
## Dose Adjustments
* **Renal Impairment:** No specific adjustment required; however, monitor closely for toxicity in patients with comorbid iron-overload conditions (e.g., hemochromatosis).
* **Hepatic Impairment:** Use with caution; monitor for iron accumulation.
## Contraindications
* Hypersensitivity to iron or any component of the formulation.
* Hemochromatosis, hemosiderosis, or any condition involving iron overload.
* Hemolytic anemia (unless iron deficiency is also present).
* Repeated blood transfusions.
## Adverse Effects
* **Common:** Nausea, abdominal pain, constipation, diarrhea, and dark/black stools (expected).
* **Serious:** Gastrointestinal mucosal injury or ulceration (rare with therapeutic doses), accidental fatal overdose in pediatric populations.
## Key Drug Interactions
* **Antacids/PPIs/H2-Blockers:** Reduce iron absorption; separate administration by at least 2 hours.
* **Fluoroquinolones/Tetracyclines:** Iron chelates these antibiotics, significantly reducing their absorption; administer iron 2 hours before or 4–6 hours after these antibiotics.
* **Levodopa/Methyldopa:** Iron may reduce the absorption of these agents.
## Monitoring
* **Hemoglobin/Hematocrit:** Check 2–4 weeks after initiation to assess response.
* **Serum Ferritin:** Monitor to assess iron stores; typically target levels >50 ng/mL.
* **Adherence/Tolérance:** Assess GI side effects at follow-up visits.
## Clinical Pearls
* **Timing:** Absorption is best on an empty stomach; however, if GI intolerance occurs, it may be taken with food (though this reduces bioavailability).
* **Vitamin C:** The ascorbate component is physiologically helpful for absorption, eliminating the need to co-administer separate vitamin C supplements.
* **Toxicology:** In small children, iron is highly toxic. Keep out of reach of children. If overdose is suspected, treat as a medical emergency.
* **Stools:** Educate patients that dark discolored stools are an expected, harmless side effect of iron therapy.
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**Educational Disclaimer:** This information is for educational purposes only. Clinical practice protocols vary. Always verify current prescribing information, dosing guidelines, and patient-specific safety factors using institutional resources or official drug monographs before prescribing or administering medication.
