Cyanocobalamin - oral

Patient Medicine Information
Why do I need this medicine?
Cyanocobalamin is used to treat pernicious anaemia, a decrease in the red blood cells which is caused by vitamin B12 deficiency.

Vitamin B12 is needed by the body to make red blood cells and not having enough of it can lead to pernicious anaemia.

This medicine is also used to treat other vitamin B12 deficiency states.
How do I take this medicine?
Take this medicine exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.

Take Cyanocobalamin between meals. Try to take it at the same time each day.

This medicine must be taken regularly for it to be effective. Continue taking Cyanocobalamin even when you feel better. Do not stop taking it unless instructed by the doctor.
What should I do if I have forgotten to take this medicine?
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and return to your normal dosing schedule.

DO NOT double a dose under any circumstances.

If you often forget to take your medicine, let your doctor and pharmacist know.
What should I take note of while taking this medicine?
Inform your doctor if you have the following conditions:

- Leber's disease (inherited form of vision loss)
- polycythemia vera (bone marrow disorder)

Let your doctor know if you are pregnant or breastfeeding.

Keep your appointments with your doctor. Your doctor needs to monitor your condition and check your response to the medication regularly. He may also need to do routine blood tests while you are being treated with Cyanocobalamin.
What side effects could I experience?
Cyanocobalamin may cause dizziness. If affected, do not drive or take part in any activity in which you need to be alert.

Other side effects include any of the following: headache, nausea, diarrhoea, indigestion, swelling of the tongue, back pain, weakness and itching.

Some side effects may need immediate medical help. Alert your doctor quickly if you experience pain and swelling in your arms and legs.

Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.
Can I take this with other medicines?
Inform your doctor and pharmacist if you are taking any of these medicines:

- chlorampenicol (antibiotic)
- colchicine (medicine for gout)
- medicines for seizures (epilepsy or fits) e.g. phenobarbital, phenytoin

This list does not include all medicines that may interact with Cyanocobalamin.

Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics, such as traditional Chinese medicine, supplements and medicines that you buy without a prescription.
What special dietary instructions should I follow?
Avoid alcohol.
How should I store this medicine?
Store in a cool, dry place away from the reach of children.

Medicines must not be used past the expiry date.
This information is independently developed by MIMS based on cyanocobalamin - oral and is provided for your reference only. It is not a replacement for and should only be used in conjunction with full consultation with a licensed healthcare professional, the information provided by your pharmacist and/or the manufacturer of the medication. It may not contain all the available information you require and cannot substitute professional medical care, nor does it take into account all individual circumstances. Although great effort has been made to ensure content accuracy, we shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2022 MIMS. All rights reserved. Powered by
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