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# Ferrous Ascorbate
## Overview
Ferrous ascorbate is a chelated salt of iron combined with ascorbic acid. The inclusion of ascorbic acid (vitamin C) lowers gastric pH and acts as a reducing agent, enhancing the dissolution and absorption of elemental iron in the small intestine compared to standard ferrous sulfate.
## Primary Indications
Treatment and prophylaxis of iron deficiency anemia (IDA) and iron deficiency states.
## Adult Dosing
* **Treatment of IDA:** 100 mg to 200 mg of elemental iron daily, administered in 1–2 divided doses.
* **Maintenance/Prophylaxis:** 50 mg to 100 mg of elemental iron daily.
* *Note:* Dosing varies by brand and formulation (refer to specific product labeling for elemental iron content).
## Pediatric Dosing
* **Treatment of IDA:** 3 mg to 6 mg elemental iron/kg/day, typically divided into 1–2 doses.
* **Maximum:** Do not exceed 200 mg elemental iron/day unless directed by a specialist.
* *Note:* Always verify the concentration of specific pediatric formulations.
## Dose Adjustments
* **Renal Impairment:** Reduce frequency if there is evidence of iron overload; however, oral iron is generally not contraindicated.
* **Hepatic Impairment:** Use with caution in patients with history of hemochromatosis or chronic liver disease.
## Contraindications
* Known hypersensitivity to iron or ascorbic acid.
* Hemochromatosis, hemosiderosis, or hemolytic anemias (unless IDA is co-existent).
* Recent blood transfusions or repeated blood transfusions.
* Peptic ulcer disease or active inflammatory bowel disease (relative contraindication due to potential GI irritation).
## Adverse Effects
* **Gastrointestinal:** Nausea, epigastric pain, constipation, diarrhea, and dark/black stools (expected).
* **Systemic:** Staining of teeth (if using liquid formulations).
## Key Drug Interactions
* **Fluoroquinolones & Tetracyclines:** Iron significantly reduces absorption; separate doses by at least 2–4 hours.
* **Levothyroxine:** Iron reduces absorption; separate by at least 4 hours.
* **Antacids/PPIs/H2 blockers:** Increase gastric pH, theoretically reducing iron absorption; administer iron 2 hours before or 4 hours after these agents.
* **Calcium/Dairy:** Can inhibit iron absorption; avoid concurrent intake.
## Monitoring
* **Baseline:** Complete Blood Count (CBC), serum ferritin, and iron saturation.
* **Follow-up:** Reticulocyte count (7–10 days post-initiation), Hemoglobin/Hematocrit (4 weeks post-initiation).
* **Target:** Restore hemoglobin levels and replenish iron stores (often requires 3–6 months of therapy after anemia resolution).
## Clinical Pearls
* **Administration:** Ideally taken on an empty stomach with a full glass of water or juice to optimize absorption. If GI side effects are intolerable, it may be taken with food, though absorption will be reduced.
* **Vitamin C Enhancement:** Ferrous ascorbate inherently combines these; ensure patients do not take extra high-dose vitamin C, as it may increase the risk of GI side effects.
* **Safety Warning:** Iron supplements are a leading cause of fatal poisoning in children. Ensure child-resistant packaging and store out of reach.
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**Educational Disclaimer:** This information is for educational purposes only. Clinical practice guidelines and local protocols vary. Always verify current prescribing information, dosing, and safety considerations using official package inserts or hospital-approved references before prescribing or administering medication.
