Cobal B12 Injection 1mg/ml 3 Ampoules

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Cobal-B12 injection is used for the prevention and treatment of anaemias associated with vitamin B12 deficiency. It is also used to treat diseases of nerves in the eyes.

Cobal-B12 injection is a form of vitamin B12.


This medicine is not addictive.

You must not be given Cobal-B12 injection if you have had an allergy to:

  • Any medicine containing hydroxocobalamin
  • Any of the ingredients listed at the end of this leaflet cobalt.

Symptoms of an allergic reaction may include shortness of breath, wheezing or difficulty breathing; swelling of the face, lips, tongue or other parts of the body; skin rash, itching or hives.

You must not be given hydroxocobalamin to treat megaloblastic anaemia of pregnancy (this is a type of anaemia usually caused by the deficiency of another vitamin called folic acid).

You must not be given this medicine after the expiry date printed on the pack or if the packaging is torn or shows signs of tampering. If it has expired or is damaged return it to your pharmacist for disposal.

If you are not sure whether you should be given this medicine, talk to your doctor.

Tell your doctor or pharmacist if you are using any other medicines, including any that you buy without a prescription from your pharmacy, supermarket or health food shop.

Some medicines and hydroxocobalamin may interfere with each other. These include:

  • Chloramphenicol, a medicine used to treat infections
  • The contraceptive pill (birth control pill)
  • Folic acid.

These medicines may be affected by hydroxocobalamin, or may affect how well it works. You may need different amounts of your medicine, or you may need to take different medicines.

Your doctor and pharmacist may have more information on medicines to be careful with or avoid while being treated with this medicine.

Tell your doctor or pharmacist if you notice any of the following and they worry you:

  • Diarrhoea
  • Nausea
  • Headache
  • Vomiting
  • Dizziness
  • Acne
  • Skin rash
  • Pain or redness at the injection site
  • Feeling hot or cold.


Active ingredient:

Cobal-B12 injection contains hydroxocobalamin acetate as the active ingredient.

Inactive ingredients:

Glacial acetic acid
Sodium chloride
Water for injections.

This medicine does not contain lactose, sucrose, gluten, tartrazine or any other azo dyes.


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