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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 significantly enhances the intestinal absorption of iron by maintaining it in a more soluble, reduced state (ferrous form) in the alkaline environment of the duodenum.
## Primary Indications
* Treatment of iron deficiency anemia (IDA).
* Prophylaxis of iron deficiency in pregnancy and lactation.
* Management of nutritional deficiency-induced anemia.
## Adult Dosing
* **Standard Treatment:** 100 mg of elemental iron equivalent once or twice daily, depending on the severity of anemia and gastrointestinal tolerance.
* **Maximum Dose:** Generally 200 mg elemental iron per day. High doses often lead to diminishing returns regarding absorption and increased GI toxicity.
## Pediatric Dosing
* **Treatment:** 3–6 mg/kg/day of elemental iron, divided into 1–3 doses.
* **Prophylaxis:** 1–2 mg/kg/day of elemental iron.
* *Note:* Always verify the concentration of the specific product, as formulations vary significantly. Dosing should be based on clinical response and hemoglobin recovery goals.
## Dose Adjustments
* **Renal Impairment:** No specific adjustment required; use with caution in patients with chronic inflammatory states where oral iron absorption may be impaired (hepcidin elevation).
* **Hepatic Impairment:** Use caution in patients with iron overload syndromes (e.g., hemochromatosis, hemosiderosis).
## Contraindications
* Hypersensitivity to iron salts or ascorbic acid.
* Haemochromatosis or other iron overload conditions (e.g., thalassemia, sideroblastic anemia).
* Patients receiving repeated blood transfusions or parenteral iron therapy.
## Adverse Effects
* **Common:** Epigastric pain, nausea, vomiting, constipation, or diarrhea.
* **Characteristic:** Dark/black stools (harmless, but may mask GI bleeding).
* **Rare:** Staining of teeth (if liquid form is used without straw/rinsing).
## Key Drug Interactions
* **Antacids/PPIs/H2-blockers:** Reduce gastric acidity, significantly decreasing iron absorption. Separate by at least 2 hours.
* **Fluoroquinolones/Tetracyclines:** Iron chelates these antibiotics, reducing their efficacy. Separate by 2–4 hours.
* **Levothyroxine:** Iron significantly decreases thyroxine absorption. Separate doses by at least 4 hours.
## Monitoring
* **Hemoglobin/Hematocrit:** Check 2–4 weeks after initiation.
* **Ferritin/Iron Indices:** Evaluate 3 months after starting therapy to assess iron stores.
* **Safety:** Monitor for GI symptoms and compliance.
## Clinical Pearls
* **Absorption:** Vitamin C content in this specific molecule may assist in absorption; however, the instruction to take on an empty stomach remains the gold standard for bioavailability.
* **Compliance:** If gastrointestinal side effects are limiting, consider taking the dose with a small amount of food or reducing frequency to alternate-day dosing, which has shown efficacy with fewer side effects.
* **Formulation:** Ensure the patient is aware that iron liquid formulations can temporarily stain teeth; rinsing the mouth after administration is recommended.
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*Disclaimer: This information is for educational purposes only. Clinical practice protocols vary by institution and country. Always verify current prescribing information, dosing guidelines, and patient-specific contraindications via official pharmaceutical resources (e.g., FDA label or BNF) and local hospital formulary protocols before prescribing or administering medication.*
