Prescribing Guides
Iron and Folic Acid Prescribing Guide for Indian Clinical Practice
Iron and folic acid prescribing guide for Indian clinicians covering anaemia treatment, national supplementation programmes, formulations and NEET PG points.
MedNext Editorial Team | 2026-08-01 | 9 min read
Iron and Folic Acid Prescribing Guide for Indian Clinical Practice
Iron and folic acid prescribing guide for Indian clinicians covering anaemia treatment, national supplementation programmes, formulations and NEET PG points.
Iron and folic acid (IFA) supplementation is central to addressing India's enormous anaemia burden. With over 50% of Indian women of reproductive age being anaemic (NFHS-5), IFA prescribing is a fundamental clinical skill and public health priority.
Clinical Pharmacology Overview
Iron: Iron is essential for haemoglobin synthesis, myoglobin, cytochrome enzymes, and numerous metabolic processes. Dietary iron exists as haem iron (from animal sources, 15-35% absorption) and non-haem iron (from plant sources, 2-20% absorption). Oral iron is absorbed primarily in the duodenum and upper jejunum via DMT1 (divalent metal transporter 1) for ferrous iron and ferroportin for export. Absorption is regulated by hepcidin.
Folic acid: Folic acid (vitamin B9) is essential for DNA synthesis, repair, and methylation. It is converted to tetrahydrofolate (THF), which is the active coenzyme in one-carbon transfer reactions. Deficiency causes megaloblastic anaemia and, in pregnancy, neural tube defects.
Key pharmacokinetics: - Ferrous iron (Fe2+) is better absorbed than ferric iron (Fe3+) - Absorption enhanced by vitamin C, acid pH, meat - Absorption reduced by tea, coffee, calcium, phytates, tannins, antacids - Folic acid: nearly 100% bioavailability. Dietary folate has approximately 50% bioavailability.
Indian Brand Names
- Autrin (Zydus Cadila) -- iron + folic acid
- Fefol (GSK) -- iron + folic acid
- Livogen (Merck) -- iron + folic acid
- Orofer XT (Emcure) -- iron + folic acid + vitamin C
- Dexorange (Franco-Indian) -- iron syrup
- Ferium XT (Emcure) -- iron + folic acid
- IV formulations: Orofer S (iron sucrose), Ferinject/Encicarb (ferric carboxymaltose)
Approved Indications in Indian Clinical Practice
- Iron deficiency anaemia (treatment and prophylaxis)
- Pregnancy-related anaemia and NTD prevention
- Folate deficiency megaloblastic anaemia
- National supplementation programmes (NIPI, WIFS)
- Post-operative anaemia management
- Chronic kidney disease-related anaemia (with ESAs)
- Menorrhagia-related iron deficiency
Dosing in Adults
Iron deficiency anaemia treatment: - Ferrous sulphate: 200 mg (65 mg elemental iron) two to three times daily - OR elemental iron 100-200 mg/day in divided doses - Continue for 3-6 months after Hb normalisation to replenish iron stores (ferritin target above 50 mcg/L)
Alternate-day dosing: emerging evidence (from hepcidin studies) suggests 100 mg elemental iron on alternate days may have equal or better absorption with fewer side effects than daily dosing.
Folic acid: - Treatment of deficiency: 5 mg orally once daily for 4 months - Pregnancy supplementation: 400-500 mcg (0.4-0.5 mg) daily. Start ideally 3 months before conception. - History of NTD-affected pregnancy: 5 mg daily from before conception through first trimester
National Iron Plus Initiative doses: - Pregnant women: IFA tablet (60 mg elemental iron + 500 mcg folic acid) daily for 180 days - Adolescent girls (WIFS): IFA tablet (60 mg iron + 500 mcg folic acid) weekly - Children 6-59 months: 20 mg elemental iron + 100 mcg folic acid biweekly
IV iron (when oral fails): - Iron sucrose: 200 mg IV over 30 minutes, repeated as needed (max 600 mg/week) - Ferric carboxymaltose: up to 1000 mg IV in a single infusion over 15 minutes (max 20 mg/kg)
Important Drug Interactions
- Tetracyclines, fluoroquinolones: iron chelates these antibiotics, reducing absorption of both -- separate by 2-4 hours
- Levothyroxine: iron reduces levothyroxine absorption -- separate by 4 hours
- Antacids, PPIs, H2 blockers: reduce iron absorption by raising gastric pH
- ACE inhibitors: combination may cause oral mucosal reactions (rare)
- Calcium supplements: reduce iron absorption -- take at different times
- Tea, coffee: tannins chelate iron -- avoid within 1 hour of iron dosing
- Vitamin C: enhances iron absorption by reducing Fe3+ to Fe2+ and forming soluble chelates
- Levodopa, methyldopa, penicillamine: iron reduces their absorption
- Folic acid and phenytoin: each may reduce the other's levels
- Methotrexate: folic acid may reduce methotrexate efficacy (but is given to reduce side effects)
Side Effects and Monitoring
Oral iron -- common: nausea, vomiting, constipation (most common), diarrhoea, abdominal cramps, metallic taste, black stools (harmless discolouration).
IV iron -- common: injection site reactions, headache, flushing, nausea, hypophosphataemia (especially ferric carboxymaltose). Serious: anaphylaxis/anaphylactoid reactions (rare but potentially fatal -- have resuscitation equipment available). Iron sucrose has a lower anaphylaxis risk than older formulations (iron dextran).
Iron overload: prolonged unnecessary supplementation can cause haemochromatosis-like effects. Do not give iron supplements without documenting iron deficiency (check ferritin, TIBC).
Folic acid: virtually no toxicity at recommended doses. May mask vitamin B12 deficiency (corrects the anaemia but allows neurological damage to progress).
Monitoring: CBC and reticulocyte count at 2-4 weeks (expect reticulocyte peak at 7-10 days). Haemoglobin at 4-8 weeks (expect rise of 1-2 g/dL per month). Serum ferritin at 3-6 months to confirm store repletion. If no response at 4 weeks, investigate: compliance, absorption issues, ongoing blood loss, incorrect diagnosis.
Special Populations
Pregnancy: IFA supplementation is standard of care in all Indian pregnancies. Start folic acid ideally before conception (prevents NTDs -- closure occurs by day 28). Iron needs increase to 27 mg/day (from 18 mg/day non-pregnant). NIPI provides free IFA tablets to all pregnant women.
Renal impairment: IV iron is preferred in CKD patients on erythropoiesis-stimulating agents. Oral iron is poorly absorbed in CKD. Target ferritin 200-500 mcg/L, TSAT above 20%.
Children: paediatric formulations (syrups, drops) are available. Iron drops for infants: 2 mg/kg/day elemental iron. Risk of accidental iron poisoning -- counsel parents on safe storage.
Elderly: investigate the cause of iron deficiency (GI malignancy, coeliac disease, NSAID-induced GI bleeding) before treating empirically. Constipation is particularly problematic in the elderly.
NEET PG High-Yield Points
- Iron absorption: Fe2+ (ferrous) better than Fe3+ (ferric); absorbed in duodenum via DMT1
- Hepcidin: master regulator of iron homeostasis (elevated in inflammation, suppresses absorption)
- Vitamin C enhances iron absorption (reduces Fe3+ to Fe2+)
- Reticulocyte count peaks at 7-10 days (first sign of response to iron therapy)
- Hb should rise 1-2 g/dL per month on adequate iron
- Continue iron 3-6 months after Hb normalises to replenish stores
- Folic acid deficiency: megaloblastic anaemia, hypersegmented neutrophils, neural tube defects
- B12 deficiency can be MASKED by folic acid -- always check B12 before treating megaloblastic anaemia
- Parenteral iron: test dose was required for iron dextran (NOT for iron sucrose or ferric carboxymaltose)
- Iron poisoning in children: 5 stages (GI, apparent recovery, hepatorenal failure, hepatic necrosis, GI scarring). Antidote: desferrioxamine
- Iron poisoning: serum iron above 300 mcg/dL is toxic, above 500 mcg/dL is potentially lethal
Indian Regulatory Status
Iron and folic acid preparations are Schedule H drugs under the Drugs and Cosmetics Act when sold as pharmaceutical preparations. IFA is included in the NLEM of India. The Government of India's National Iron Plus Initiative (NIPI) is the world's largest IFA supplementation programme, providing free supplements through the public health system across all life stages. The Weekly Iron and Folic Acid Supplementation (WIFS) programme targets adolescent girls in schools. Price is controlled under DPCO for NLEM formulations. IV iron formulations are hospital-dispensed and require medical supervision.
Frequently Asked Questions
What is the dose of iron for treating iron deficiency anaemia?
Therapeutic dose: elemental iron 100-200 mg/day in 2-3 divided doses for adults. Ferrous sulphate 200 mg (65 mg elemental iron) three times daily is the classic regimen. However, recent evidence supports alternate-day dosing for better absorption and fewer side effects. Continue for 3-6 months after haemoglobin normalisation to replenish stores.
Why is folic acid given with iron in India?
India has high prevalence of both iron deficiency and folate deficiency due to dietary patterns, cooking methods that destroy folate, and high fertility rates. Combined IFA supplementation addresses both deficiencies simultaneously. In pregnancy, folic acid prevents neural tube defects (NTDs). The Government of India's National Iron Plus Initiative provides free IFA supplements.
What are the common side effects of oral iron?
GI side effects are the main reason for non-compliance: nausea, constipation, abdominal pain, black stools (harmless), metallic taste, and diarrhoea. These are dose-dependent and related to the amount of elemental iron. Strategies to improve tolerance include starting at low doses, alternate-day dosing, and taking with food (though this reduces absorption by 40%).
When should IV iron be used instead of oral?
IV iron is indicated when oral iron is not tolerated, not absorbed (malabsorption syndromes, post-gastrectomy), when rapid correction is needed (severe anaemia in late pregnancy, perioperative), in chronic kidney disease (on ESAs), and in inflammatory bowel disease (oral iron worsens inflammation). Iron sucrose and ferric carboxymaltose are the commonly used IV formulations in India.
What is the National Iron Plus Initiative?
The National Iron Plus Initiative (NIPI) is the Government of India's programme providing free iron and folic acid supplementation across all age groups and life stages. It covers infants, children, adolescents (WIFS programme in schools), pregnant and lactating women, and reproductive-age women. It is the world's largest IFA supplementation programme.
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