Carbonyl Iron

Carbonyl iron is a highly pure form of elemental iron (100% elemental iron by weight). It is used to prevent and treat iron deficiency and iron deficiency anemia. Unlike soluble iron salts (such as ferrous sulfate), carbonyl iron is absorbed more slowly in the stomach, which typically results in fewer gastrointestinal side effects such as nausea, constipation, or abdominal pain.

Dosage by Body Weight

Take exactly as directed by your doctor or follow the package instructions. Iron is best absorbed on an empty stomach, usually 1 hour before or 2 hours after meals. If stomach upset occurs, it may be taken with food. Avoid taking antacids, calcium supplements, dairy products, tea, or coffee within 2 hours before or after taking iron, as they can significantly decrease absorption. Co-administration with Vitamin C can enhance absorption.

  1. Body Weight
    Below 5 kg
    Dose
    Not routine
    Frequency
    Use only if prescribed
    Tracking Notes
    Iron supplementation in infants under 5 kg must be strictly supervised and dosed by a pediatrician.
  2. Body Weight
    5-7 kg
    Dose
    15 mg to 35 mg daily of elemental iron
    Frequency
    Once daily or divided into two doses
    Tracking Notes
    Based on pediatric therapeutic dosing of 3-6 mg/kg/day. Prophylactic dosing is lower (typically 1-2 mg/kg/day). Seek pediatrician advice before initiating.
  3. Body Weight
    8-10 kg
    Dose
    24 mg to 50 mg daily of elemental iron
    Frequency
    Once daily or divided into two doses
    Tracking Notes
    Ensure child drinks plenty of water. Iron may cause stools to turn black or dark green, which is harmless.
  4. Body Weight
    11-15 kg
    Dose
    33 mg to 75 mg daily of elemental iron
    Frequency
    Once daily or divided into two doses
    Tracking Notes
    Keep medicine securely closed and out of reach of children. Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6.
  5. Body Weight
    16-20 kg
    Dose
    48 mg to 100 mg daily of elemental iron
    Frequency
    Once daily or divided into two doses
    Tracking Notes
    Do not exceed the recommended dose. Liquid formulations may temporarily stain teeth; rinsing the mouth or brushing teeth after administration can help.

Formulation

TabletCapsuleSuspension

Purpose

Prevention and treatment of iron deficiency and iron deficiency anemia.

Generic Name

Carbonyl Iron

Branded Drug Names

Carbonyl Iron is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:

Scheduled Drug

No. This medicine is generally not treated as a scheduled/prescription-only drug in common consumer references, but local rules may vary.

Alternatives

Disclaimer: This information is for educational purposes only. WHO references and weight bands are simplified for tracking and must not replace medical advice. Always consult with a healthcare professional before starting or changing any medication.