1. Clinical Overview
A fixed-dose combination (FDC) hematinic preparation containing elemental iron as Ferrous Ascorbate (providing 50mg elemental iron), Cyanocobalamin (Vitamin B12), and Folic Acid. It is a cornerstone therapy for the prophylaxis and treatment of nutritional and deficiency anemias, particularly iron deficiency anemia (IDA) and megaloblastic anemia, which are highly prevalent in the Indian population due to dietary habits, parasitic infections, and increased demands in pregnancy.
| Onset | Duration | Bioavailability |
|---|---|---|
| Reticulocyte count begins to rise in 5-7 days. Hemoglobin levels typically increase by 1-2 g/dL over 3-4 weeks of therapy. Subjective symptoms like fatigue may improve within a week. | The duration is dependent on the correction of the underlying deficiency. Iron stores (ferritin) may take 3-6 months to replenish fully after hemoglobin normalization. | Iron (Ferrous Ascorbate): 15-35% (fasting), enhanced by ascorbic acid. Cyanocobalamin: ~50% via oral route at physiologic doses, but <1% in pernicious anemia without intrinsic factor. Folic Acid: 85-95% in fasting state. |
2. Mechanism of Action
This combination acts synergistically to correct anemia by providing essential substrates for erythropoiesis. Iron is incorporated into heme, the oxygen-carrying component of hemoglobin. Cyanocobalamin and Folic Acid are cofactors in DNA synthesis, crucial for the maturation of red blood cell precursors in the bone marrow. Deficiency of either leads to impaired cell division and megaloblastic anemia.
3. Indications & Uses
- Iron Deficiency Anemia (IDA)
- Megaloblastic Anemia due to Vitamin B12 and/or Folic Acid deficiency
- Nutritional anemia in pregnancy and lactation
- Anemia of chronic blood loss (e.g., menorrhagia, hemorrhoids)
4. Dosage & Administration
Adult Dosage: One tablet once daily, preferably on an empty stomach (1 hour before or 2 hours after food) for optimal iron absorption. If GI upset occurs, can be taken with or just after food, though absorption is reduced.
Administration: Swallow tablet whole with a full glass of water. Do not crush or chew. To enhance absorption: Take on empty stomach with Vitamin C-rich drink (e.g., orange juice). Avoid taking with tea, coffee, milk, calcium supplements, or antacids within 2 hours. Stools may turn dark green or black; this is harmless.
5. Side Effects
Common side effects may include:
- Nausea, epigastric pain
- Constipation or diarrhea
- Dark-colored stools
- Abdominal discomfort
6. Drug Interactions
| Drug | Effect | Severity |
|---|---|---|
| Antacids, Calcium supplements, Proton Pump Inhibitors (e.g., Omeprazole) | Decreased absorption of iron (and possibly B12 with PPIs) due to increased pH or complex formation. | Major |
| Tetracyclines (e.g., Doxycycline), Fluoroquinolones (e.g., Ciprofloxacin), Bisphosphonates (e.g., Alendronate) | Decreased absorption of the antibiotic/bisphosphonate. Administer at least 2-4 hours apart. | Major |
| Levothyroxine | Decreased absorption of levothyroxine, reducing its efficacy. | Major |
| Chloramphenicol | May delay the hematologic response to iron therapy. | Moderate |
| Methotrexate, Trimethoprim, Pyrimethamine | Antifolate effect; may reduce efficacy of folic acid. Folic acid may reduce efficacy of these drugs. | Moderate |
| Colchicine, Aminoglycosides, Metformin | May reduce absorption of Vitamin B12. | Moderate |
7. Patient Counselling
- DO take on an empty stomach with water or orange juice for best absorption.
- DO continue medication for as long as prescribed, often for several months after hemoglobin normalizes to replenish stores.
- DO inform your doctor if you are taking any other medicines, especially antacids, thyroid medicine, or antibiotics.
- DON'T take with tea, coffee, milk, or calcium supplements.
- DON'T lie down immediately after taking the tablet.
- DON'T give this medication to children unless specifically prescribed.
8. Toxicology & Storage
Overdose: Acute Iron Toxicity (especially in children): Stages: 1) GI: Nausea, vomiting (often bloody), diarrhea, abdominal pain, hematemesis. 2) Quiescent phase (6-24 hrs). 3) Metabolic: Metabolic acidosis, hypoglycemia, coagulopathy, shock. 4) Hepatic failure. Chronic Overdose: Hemosiderosis/hemochromatosis: organ damage (liver, heart, pancreas).
Storage: Store below 30°C in a cool, dry place. Protect from light and moisture. Keep the container tightly closed. Keep out of reach of children. Do not use after the expiry date printed on the pack.