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# Ferrous Ascorbate
## Overview
Ferrous ascorbate is an iron salt of ascorbic acid (vitamin C). The addition of ascorbic acid enhances the absorption of elemental iron by maintaining it in a more soluble, reduced ferrous state ($Fe^{2+}$) and reducing the inhibitory effect of dietary phytates and tannins.
## Primary Indications
* Treatment and prophylaxis of iron deficiency anemia (IDA).
## Adult Dosing
* **Standard dose:** 100 mg elemental iron daily.
* **Severe cases/malabsorption:** Up to 100 mg twice daily.
* *Note:* Dosing is highly dependent on institutional protocols and the severity of anemia; efficacy should be confirmed via hematologic response.
## Pediatric Dosing
* **General guidance:** Recommended dose is 3–6 mg/kg/day of elemental iron, divided into 1–3 doses.
* *Note:* Consult local pediatric pharmacy guidelines or weight-based dosing charts, as salt content varies by formulation.
## Dose Adjustments
* **Renal Impairment:** No specific adjustment required; however, monitor for gastrointestinal distress.
* **Hepatic Impairment:** Use with caution in patients with iron storage disorders (e.g., hemochromatosis, hemosiderosis).
## Contraindications
* Hypersensitivity to any component of the product.
* Conditions associated with iron overload (hemochromatosis, hemosiderosis, hemolytic anemia).
* Patients receiving repeated blood transfusions or parenteral iron therapy.
## Adverse Effects
* **Gastrointestinal:** Constipation, dark/black stools (expected), nausea, abdominal pain, diarrhea.
* **Rare:** Allergic reactions, tooth staining (with liquid formulations—dilute and rinse mouth).
## Key Drug Interactions
* **Reduced absorption of iron:** Antacids, calcium supplements, proton pump inhibitors (PPIs), and H2-receptor antagonists (administer 2 hours before or 4 hours after).
* **Reduced efficacy of other drugs:** Iron may decrease the absorption of levodopa, methyldopa, penicillamine, bisphosphonates, and fluoroquinolone/tetracycline antibiotics (separate doses by at least 2–4 hours).
## Monitoring
* **Baseline:** Complete Blood Count (CBC), serum ferritin, and iron saturation.
* **Follow-up:** Reticulocyte count (7–10 days post-initiation), hemoglobin/hematocrit (4–8 weeks post-initiation).
* **Safety:** Monitor for signs of iron toxicity and gastrointestinal intolerance.
## Clinical Pearls
* **Administration:** Iron is best absorbed on an empty stomach (1 hour before or 2 hours after meals). If GI side effects are limiting, taking with a small amount of food is acceptable, though absorption may decrease.
* **Adherence:** Patient education is vital regarding dark stools, which are harmless and expected.
* **Ferritin Targets:** Treatment should continue until anemia is resolved and iron stores are replenished (typically 3–6 months after hemoglobin normalization).
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**Educational Disclaimer:** This information is for educational purposes only. Always verify dosing, contraindications, and drug interactions against institutional guidelines, current package inserts, or clinical decision support software before prescribing or administering medication.
