Azapin Tablets

Azapin Tablets is a brand of medicine containing the active ingredient azathioprine.

Find out more about active ingredients.

Consumer medicine information (CMI) leaflet

Developed by the pharmaceutical company responsible for this medicine in Australia, according to TGA regulations.


AZAPIN™ (azathioprine) 50 mg tablets (pronounced ay-za-THYE-oh-preen).

Consumer Medicine Information

What is in this leaflet

This leaflet answers some of the common questions about AZAPIN It does not contain all the available information.

It does not take the place of talking to your doctor or pharmacist.

All medicines have risks and benefits. Your doctor has weighed the risks of you taking AZAPIN against the benefits the medicine is expected to have for you.

If you have any concerns about taking this medicine, ask your doctor or pharmacist.

Keep this leaflet with the medicine. You may need to read it again.

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What AZAPIN is used for

AZAPIN tablets contain azathioprine. This belongs to a group of medicines called immunosuppressants which work by reducing the body’s own natural immunity.

AZAPIN tablets are used to treat patients who have received an organ transplant to help prevent their body from rejecting the transplanted organs (e.g. a heart or kidney).

AZAPIN tablets are also used to suppress the body’s immunity to treat “autoimmune” conditions like rheumatoid arthritis, and SLE (systemic lupus erythematosus).

AZAPIN tablets may also be used to treat other conditions as determined by your doctor.

AZAPIN is a very powerful medicine.

Never let anyone else take your medicine even if his or her condition seems similar to yours.

Have regular check ups with your doctor.

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Before you take AZAPIN

When you must not take it

  • If you are female and you are pregnant or there is a chance that you may become pregnant; or if you are male and there is a chance that you may father a child.
Azathioprine is not recommended during pregnancy. It may cause birth defects if either the male or female are using it at the time of conception. Your partner should take adequate contraceptive precautions while you are taking AZAPIN.
  • If you are breastfeeding or are planning to breastfeed . Azathioprine passes into breast milk and may cause serious side effects to your baby.
  • If you are taking any other medicines or drugs.
  • If you have ever had an allergy to AZAPIN or any of its ingredients (listed at the end of this leaflet), or to other immunosuppressant medicines (eg. 6- mercaptopurine).
Symptoms of an allergic reaction may be mild or severe. Signs if you are suffering an allergic reaction usually include some of the following: wheezing, swelling of the lips / mouth, difficulty in breathing, hayfever, lumpy rash (hives) or fainting.
  • If you have rheumatoid arthritis which has previously been treated with an alkylating agent (eg. chlorambucil, melphalan or cyclophosphamide).

All of these factors need to be taken into consideration by your doctor when he/she considers the most appropriate dose for you.

Do not take AZAPIN after the expiry date printed on the pack as it may not work as well.

Before you start to take it

Tell your doctor if you :

  • Are allergic to foods, dyes, and preservatives.
  • Have any other medical conditions.
  • Have liver or kidney disease.
  • Have been or are considering being vaccinated.
  • Are currently having or are considering dental treatment.
  • Are pregnant or are planning on fathering a child.
  • Are breastfeeding or are planning to breastfeed.

Taking other medicines

If you are taking other medicines you must tell your doctor. This includes medicines that you can buy without a prescription from a pharmacy, supermarket or a health food shop.

Some medicines are affected by others. Your doctor or pharmacist will be able to tell you what you should do when you have to take other medicines while you are on AZAPIN.

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How to take AZAPIN

How much to take

Use AZAPIN tablets only as directed by your doctor. Your doctor has carefully determined your dose of AZAPIN. Your dose of AZAPIN is determined by the condition being treated, your body weight and any other medical conditions that you may have. Do not alter the amount you are taking or change your treatment regime unless directed to do so by your doctor.

How to take AZAPIN

AZAPIN tablets should only be taken orally. Swallow AZAPIN tablets with a glass of water. Do not crush or chew the tablets

When to take AZAPIN

AZAPIN tablets may sometimes cause mild nausea and vomiting. Take your medicine after food or at bedtime to minimise stomach upset.

How long to take AZAPIN

Do not stop taking AZAPIN tablets without first checking with your doctor. Your doctor will discuss with you how long you need to take AZAPIN tablets. You could have to take AZAPIN for some weeks or months before you will be able to receive the full effects.

Patients that are taking AZAPIN tablets because they have had an organ transplant will need to take AZAPIN continuously to reduce the risk of the body rejecting the transplanted organ.

If you forget to take it

If it is almost time for your next dose, skip the dose you missed and take your next dose when you are meant to. Otherwise, take it as soon as you remember, and then go back to taking AZAPIN as you would normally.

Never take a double dose to make up for the dose that you missed.

If you are not sure what to do, ask your doctor or pharmacist.

Do not use AZAPIN tablets if the blister foil is broken or shows signs of tampering.

If you take too much (overdose)

Immediately telephone your doctor or Poisons Information Centre (13  11  26) if you think that you or anyone else may have taken too many AZAPIN tablets. Do this even if there are no signs of discomfort or poisoning. You may need urgent medical treatment.

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While you are using AZAPIN

Things you must do

You should always tell your doctor about any other medicines that you take , even if you have bought the medicines, vitamins or herbal products without a doctor’s prescription. Some medicines can affect the way AZAPIN works. It is especially important that you tell your doctor if you are taking any of the following:

  • Allopurinol (eg. ZYLOPRIM™) – may reduce the removal of azathioprine from your body
  • Corticosteroids (cortisone like medicines) these may be prescribed by your doctor to increase the effects of AZAPIN.
  • Cytotoxic medicines (eg. mercaptopurine, chlorambucil, cyclosporine, cyclophosamide).
  • Warfarin (eg. Coumadin and Marevan). Azathioprine inhibits the anticoagulant effect of warfarin.

Make regular visits to your doctor, so that the doctor will be able to ensure that AZAPIN tablets are working properly for you and that you are not suffering any unwanted side effects. Your doctor may take regular blood tests to check how you are reacting to AZAPIN tablets.

If you have to have or are planning to have an operation, tell your surgeon and anaesthetist that you are taking AZAPIN tablets

AZAPIN tablets suppress your immune system, lowering your body’s immune defence system. This increases your risk of skin cancer and other cancers while taking AZAPIN. Always protect yourself from the sun, wear sunscreen, a hat and protective clothing.

Tell your doctor:

  • If you become pregnant or you are trying to become pregnant or you are planning to father a child.
  • If you plan to have any vaccinations or immunisations.
  • If you notice any new moles or changes in existing moles.
  • If you notice any lumps on your body or if you feel unwell.

Things you must not do

Do not:

  • stop taking AZAPIN tablets or change the dose without first checking with your doctor.
  • give this medicine to anyone else, even if their symptoms seem similar to yours
  • have any immunisations without your doctor’s approval. Avoid contact with any person in your household who has had an oral polio vaccine recently. Try to avoid contact with people who have infectious diseases (such as the ‘flu).
  • Participate in contact sports or other situations where bruising or injury may occur. Be careful to avoid cutting yourself with sharp objects (eg. razors).

Things to be careful of

Be careful driving or operating machinery until you know how AZAPIN affects you. AZAPIN generally does not cause any problems with your ability to drive a car or operate machinery. However, as with many other medicines, AZAPIN tablets may cause headache or dizziness in some people.

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Side effects

Check with your doctor if you experience any problems while taking AZAPIN, even if you do not think that the problems you are having have anything to do with you taking AZAPIN tablets. Your doctor will have assessed the risk of possible side effects against the importance of you taking this medication. Some side effects may have signs or symptoms that you can see or feel. Your doctor will watch for other side effects by performing certain tests. Ensure that you have regular check ups with your doctor.

Side effects commonly found in patients who have received organ transplant are:

  • viral, fungal and bacterial infections that include the skin
  • hair loss (common in kidney transplant patients)
  • stomach pain with vomiting and fever
  • diarrhoea, usually with blood and mucus
  • sores in mouth and on the lips
  • feeling of pins and needles
  • change in sense of smell or taste
  • skin rash
  • tiredness and generally feeling unwell

Tell the doctor immediately if you notice any of the following :

  • any infection, unexpected bruising or bleeding, black tarry stools or blood in the urine or stools
  • headache, stiff neck and extreme sensitivity to bright light
  • muscle pain or stiffness
  • severe joint pain
  • coughing, difficulty in breathing and wheezing
  • muscle weakness, with or without skin rash
  • irregular heart beat
  • yellow discolouration of the skin and eyes
  • fever
  • severe abdominal pain
  • nausea, vomiting, diarrhoea
  • dizziness or feeling faint

IMMEDIATELY CONTACT YOUR DOCTOR or go to the casualty department at your nearest hospital if you observe any of the following symptoms as you may be having an allergic reaction to AZAPIN:

  • wheezing
  • swelling of the lips / mouth
  • difficulty in breathing
  • hay fever
  • lumpy rash
  • fainting

This is not a complete list of possible side effects. You may react in a different way. Contact your Doctor or Pharmacist if you notice anything else that is making you feel unwell, even if it is not on this list.

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After using AZAPIN


Keep your tablets in the blister strip until it is time to take them. If you take the tablets out of the blister strip they may not keep as well.

Keep AZAPIN tablets in a cool dry place where the temperature stays below 30°C.

Do not leave or store AZAPIN tablets in the bathroom, near a sink or stove, on a windowsill or in a car. Heat and dampness can destroy some medicines.

Keep AZAPIN tablets where children cannot reach them. A locked cupboard at least one-and-a-half metres above the ground is a good place to store medicines.

Safe Handling of azathioprine tablets. Azathioprine tablets should not be divided, crushed or broken. Provided that the film coating is intact, there is no risk in handling film-coated tablets.


Tell your doctor if you stop taking the tablets or the tablets have passed their expiry date. Ask your pharmacist what to do with any tablets which are left over.

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Product Description

What AZAPIN tablets look like

AZAPIN 50 mg - yellow film coated tablet, embossed AZA, break line 50 on one face, the other face plain.


Active ingredient

Other ingredients (excipients)
Cellulose microcrystalline, mannitol, povidone, maize starch, croscarmellose sodium, sodium stearylfumarate and Opadry clear OY-7240 (macrogol 400 and hypromellose).

AZAPIN tablets do not contain sucrose or gluten.


Sigma Pharmaceuticals (Australia) Pty Ltd
96 Merrindale Drive
Croydon Vic 3136
Tel: 03 - 9839 2800

AZAPIN 50 mg tablets AUST R 92801

Date of preparation:
March 2003

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CMI provided by MIMS Australia, June 2015  

Related information - Azapin Tablets


12 Oct 2016 Information on medicines available in Australia containing azathioprine, including our latest evidence-based information and resources for health professionals and consumers. The active ingredient is the chemical in a medicine that makes it work. Medicines that contain the same active ingredient can be available under more than one brand name. Brands include both active ingredients and inactive ingredients. You'll find information about brands of medicines that contain azathioprine below, including their consumer medicine information (CMI) leaflets.