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General information, not medical advice

Your prescriber and the leaflet in your pack know your situation. This page does not.

  • Follow your prescriber and the leaflet
  • Don't start, stop, or change a dose on your own
  • Doses and warnings differ by country and product
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Autrin Capsule: Uses, Dosage, Side Effects, Precautions and Alternates

· 5 min read

Autrin Capsule: Uses, Dosage, Side Effects, Precautions and Alternates
Generic nameVitamin and Mineral Supplement
Drug classHematinics / Nutritional Supplement
FormsCapsule
Autrin Capsule: Uses, Dosage, Side Effects, Precautions and Alternates product

Quick overview

Autrin Capsule is an oral vitamin and mineral supplement containing cyanocobalamin (vitamin B12), ferrous fumarate (iron), and folic acid. It belongs to the hematinic and nutritional supplement drug class and is used to treat and prevent nutritional anaemias, especially those caused by low iron and low B-vitamin levels. It works by supplying the key nutrients needed to build healthy red blood cells and support healthy haemoglobin levels.

What is Autrin Capsule

Autrin Capsule is an oral supplement used to treat and prevent nutritional anaemias, especially those caused by low iron and low B-vitamin levels in the body. It contains cyanocobalamin (vitamin B12), ferrous fumarate (iron), and folic acid.

Autrin Capsule uses

  • Iron deficiency anaemia
  • Nutritional folate deficiency
  • Vitamin B12 deficiency anaemia
  • Supports management of iron deficiency and nutritional anaemia
  • Supports overall nutritional balance and energy levels
  • Helps maintain healthy haemoglobin levels

Benefits of Autrin Capsule

  • Supports healthy red blood cell production, improving oxygen delivery throughout the body to help relieve persistent fatigue and muscle tiredness
  • Increased oxygen delivery to the brain may help reduce mental fog and improve focus associated with anaemia
  • Helps correct nutritional deficiencies, which may improve symptoms such as pale skin, hair loss, and brittle nails over time

How Autrin Capsule works

Autrin Capsule works by supplying three nutrients that work together to build healthy red blood cells. Ferrous fumarate provides iron, which is the key part of haemoglobin that lets red blood cells carry oxygen from the lungs to the rest of the body. Folic acid is a B-vitamin needed for cell growth and helps immature blood cells in the bone marrow develop into mature, healthy red blood cells. Vitamin B12 (cyanocobalamin) works together with folic acid, supports the protective coating around nerves, and helps prevent the formation of large, poorly formed red blood cells.

Autrin Capsule dosage

Autrin Capsule can be taken on an empty stomach, at least 1 hour before or 2 hours after a meal, for better absorption; if it upsets your stomach, take it with food instead. It is usually taken once daily, or as your doctor recommends. Swallow the whole capsule with a glass of water. Do not break, chew, or crush the capsule. Try to take it at the same time every day for the best results. Some sources suggest taking it after meals to reduce stomach discomfort, so follow your doctor's specific instructions.

Age groupDose
ChildrenDose based on iron, folic acid, and vitamin requirements (only if prescribed)
Adults (18–64 Years)1 capsule once daily or as directed
Older Adults (65+ Years)1 capsule once daily; adjusted according to nutritional needs

Available forms and strengths

  • Capsule

Side effects of Autrin Capsule

Common

  • Darkened or dark-colored stools
  • Mild stomach discomfort
  • Nausea
  • Constipation
  • Diarrhea

Serious

  • Severe abdominal pain
  • Persistent vomiting
  • Signs of an allergic reaction (rash, itching, swelling, difficulty breathing)
  • Severe stomach pain or cramping

Warnings and precautions

  • Do not take this medicine if you have iron overload conditions, such as hemochromatosis, or if you've had an allergic reaction to any of its ingredients before.
  • Talk to your doctor first if you have a history of stomach ulcers or inflammatory bowel conditions, since the iron in this product can irritate the digestive tract and may make these conditions worse.
  • Don't take calcium supplements, antacids, or other minerals within two hours of taking this medicine, because they can strongly block how well your body absorbs the iron.
  • Expect your stools to look dark or greenish-black while taking this medicine. This is a normal, harmless effect from the iron passing through your body.
  • Tell every healthcare provider that you are taking this medicine before any lab tests, since it can sometimes affect certain blood and stool test results.
  • This medicine is not recommended if you have iron overload conditions, certain types of anaemia not caused by iron deficiency, a known allergy to any ingredient, or if you have needed repeated blood transfusions that led to excess iron.
  • Talk to your doctor before taking Autrin Capsule if you are pregnant. Your doctor will only recommend it if the benefits are greater than the risks. 
  • It may be used during pregnancy if advised by a doctor, since iron and folic acid needs often increase at this time.
  • Talk to your doctor before taking Autrin Capsule while breastfeeding. Your doctor will decide if it is appropriate for you.
  • Talk to your doctor before taking this medicine if you have kidney problems. Dose adjustments or monitoring may be needed.
  • Talk to your doctor before taking this medicine if you have liver problems or any concerns about your liver.
  • It isn't known if alcohol interacts with this medicine, so check with your doctor. Drinking too much alcohol may also reduce how well your body absorbs nutrients and lower the effectiveness of the iron.
  • It isn't known whether this medicine affects your ability to drive. Only drive or operate machinery if you feel alert.

Storage

  • Store Autrin Capsule at room temperature, ideally between 15°C and 30°C (59°F to 86°F)
  • Store in a cool, dry place
  • Keep out of reach of children

When to see a doctor

  • Get medical help right away if you have severe stomach pain or vomiting that won't stop.
  • Seek medical attention if you notice signs of an allergic reaction like rash, swelling, or trouble breathing.
  • If you think you or someone else has taken too much of this medicine, get emergency medical care right away or contact a poison control center. Too much iron can be very dangerous, especially for young children.
  • Stop taking this medicine and talk to your doctor if you have persistent constipation or other unusual symptoms.

Alternatives

  • Livogen-Z Capsule
  • Iberet Folic Tablet
  • Obimin Tablet

Watch the video

Video: Autrin Capsule: Uses, Dosage, Side Effects, Precautions and Alternates

FAQs

What is Autrin Capsule used for?

Autrin Capsule is used to treat and prevent nutritional anaemias, especially those caused by low iron and low B-vitamin levels, including iron deficiency anaemia, nutritional folate deficiency, and vitamin B12 deficiency anaemia.

What are the ingredients in Autrin Capsule?

Autrin Capsule contains cyanocobalamin (vitamin B12), ferrous fumarate (iron), and folic acid.

How should I take Autrin Capsule?

Autrin Capsule is usually taken once daily, ideally on an empty stomach at least 1 hour before or 2 hours after a meal for better absorption. If it upsets your stomach, it can be taken with food instead. Swallow the whole capsule with water without breaking, chewing, or crushing it.

Does Autrin Capsule cause side effects?

Common side effects include darkened or dark-colored stools, mild stomach discomfort, nausea, constipation, and diarrhea. Serious side effects like severe abdominal pain, persistent vomiting, or allergic reactions require medical attention.

Who should not take Autrin Capsule?

Autrin Capsule should not be taken by people with iron overload conditions like hemochromatosis, certain types of anaemia not caused by iron deficiency, a known allergy to any ingredient, or those who have needed repeated blood transfusions leading to excess iron.

General information, not medical advice

Your prescriber and the leaflet in your pack know your situation. This page does not.

  • Follow your prescriber and the leaflet
  • Don't start, stop, or change a dose on your own
  • Doses and warnings differ by country and product
Facts checked by a personSourcesFull disclaimer

Sources

  1. Drugs.com Clinical Review Team. Ferric Citrate Clinical Drug Monograph. Auckland, NZ: Drugs.com; 2026.
  2. Drugs.com Clinical Review Team. Folic Acid Clinical Drug Monograph. Auckland, NZ: Drugs.com; 2026.
  3. Drugs.com Clinical Review Team. Cyanocobalamin Clinical Drug Monograph. Auckland, NZ: Drugs.com; 2026.
  4. Advait Vasavada; Preeti Patel; Devang K. Sanghavi. Cyanocobalamin. NIH National Library of Medicine, National Centre for Biotechnology Information. statpearls. [Revised in 31st January 2024].
  5. Conical pharmaceuticals. Ferrous Fumarate, Folic Acid, Vitamin B12 Tablet.
  6. Drugs.com. Ferrous fumarate and folic acid. [Revised in 31st January 2025].