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# Ferrous Ascorbate
## Overview
Ferrous ascorbate is a combination of iron (ferrous) and ascorbic acid (vitamin C). Ascorbic acid enhances the absorption of non-heme iron.
## Primary Indications
Treatment and prevention of iron deficiency anemia.
## Adult Dosing
* **Treatment of iron deficiency anemia:** 100-200 mg of elemental iron daily, divided into 1-2 doses. This typically corresponds to 300-600 mg of ferrous ascorbate (containing 100-200 mg elemental iron) daily.
* **Prevention of iron deficiency anemia:** 60-100 mg of elemental iron daily.
Dosing depends on the severity of anemia and patient response.
## Pediatric Dosing
* **Treatment of iron deficiency anemia (6 months to 5 years):** 3-5 mg/kg/day of elemental iron, divided into 1-3 doses.
* **Treatment of iron deficiency anemia (5 years to 12 years):** 1-1.5 mg/kg/day of elemental iron, divided into 1-3 doses, not to exceed 200 mg elemental iron daily.
* **Prevention of iron deficiency anemia (4 months to 12 years):** 1 mg/kg/day of elemental iron, not to exceed 30 mg elemental iron daily.
Specific pediatric dosing may vary based on local guidelines or physician discretion.
## Dose Adjustments
No dose adjustment is typically required for hepatic or renal impairment, but caution is advised and iron overload should be monitored, especially in severe renal impairment.
## Contraindications
* Known hypersensitivity to ferrous ascorbate or its components.
* Patients with hemochromatosis or other conditions of iron overload.
* Pernicious anemia.
## Adverse Effects
Common: Gastrointestinal upset (nausea, vomiting, diarrhea, constipation, abdominal pain), metallic taste, dark stools.
Less Common: Allergic reactions, iron overload symptoms (fatigue, joint pain, abdominal pain) with chronic excessive use.
## Key Drug Interactions
* **Antacids, calcium supplements, tetracyclines, levothyroxine, bisphosphonates:** May decrease iron absorption. Separate administration by at least 2 hours.
* **Proton pump inhibitors (PPIs) and H2-receptor antagonists:** May decrease iron absorption by increasing gastric pH.
* **Antibiotics (e.g., fluoroquinolones, tetracyclines):** May chelate with iron, reducing absorption of both. Separate administration by at least 2 hours.
* **Vitamin E:** May reduce the absorption of iron.
## Monitoring
* Hemoglobin and hematocrit levels.
* Iron studies (serum ferritin, serum iron, total iron-binding capacity) to assess iron status and response.
* Monitor for signs and symptoms of gastrointestinal intolerance.
* Monitor for signs of iron overload in patients with chronic disease or prolonged therapy.
## Clinical Pearls
* Administer on an empty stomach for optimal absorption, but if gastrointestinal upset occurs, take with food.
* Ascorbic acid improves absorption; taking with orange juice may be beneficial.
* Avoid co-administration with milk, antacids, or medications that interfere with iron absorption.
* Dark stools are a expected and benign side effect.
* Iron overload can be serious; adhere to prescribed doses and duration of therapy.
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**Disclaimer:** This information is intended for healthcare professionals. Always verify current prescribing information and consult appropriate resources before making clinical decisions.