Azathioprine

= Prescription Required = Generic Equvalent
Azathioprine
50mg Tablets
Manufactured by Sandoz

Azathioprine Prescription Drug Information

Azathioprine (By mouth)
Azathioprine (ay-za-THYE-oh-preen)

Prevents your body from rejecting a kidney transplant. Azathioprine also reduces joint pain in severe rheumatoid arthritis.

Brand Name(s):Azasan, Imuran
There may be other brand names for Azathioprine.

When Azathioprine Should Not Be Used:
You should not use Azathioprine if you have had an allergic reaction to azathioprine, or if you are pregnant. You should not use azathioprine if you have received other medicines such as cyclophosphamide (Cytoxan®, Neosar®), chlorambucil (Leukeran®), or melphalan (Alkeran®) to treat your arthritis.

How to Use Azathioprine:
Tablet

  • Your doctor will tell you how much of Azathioprine to use and how often. Your dose may need to be changed several times in order to find out what works best for you. Do not use more medicine or use it more often than your doctor tells you to.

If a dose of Azathioprine is missed:

  • If you miss a dose or forget to use your medicine, use it as soon as you can. If it is almost time for your next dose, wait until then to use the medicine and skip the missed dose. Do not use extra medicine to make up for a missed dose.
  • Check with your doctor if you miss more than one dose.

How to Store and Dispose of Azathioprine:

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.
  • Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any leftover medicine after you have finished your treatment. You will also need to throw away old medicine after the expiration date has passed.
  • Keep all medicine away from children and never share your medicine with anyone.

Drugs and Foods to Avoid While Taking Azathioprine:
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

  • Tell your doctor if you are using allopurinol (Aloprim®, Zyloprim®), cotrimoxazole (Bactrim®, Cotrim®, Septra®), mesalamine (Asacol®, Rowasa®), olsalazine (Dipentum®), sulfasalazine (Azulfidine®), or medicines that may weaken the immune system such as steroids (methylprednisolone, prednisone, Medrol®).
  • Make sure your doctor knows if you are using a blood thinner such as warfarin (Coumadin®), or blood pressure medicines such as captopril, enalapril, lisinopril, Accupril®, Lotensin®, Lotrel®, Prinivil®, Zestoretic®, Vasotec®, or Zestril®.
  • Talk to your doctor before getting flu shots or other vaccines while you are receiving Azathioprine. Vaccines may not work as well, or they could make you ill while you are using Azathioprine.

Warnings While Using Azathioprine:

  • Using Azathioprine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.
  • Make sure your doctor knows if you are breastfeeding, or if you have liver disease, kidney disease, or any type of infection.
  • You should not use Azathioprine if you are also taking mercaptopurine (Purinethol®). Using these medicines together could cause serious health problems.
  • Your doctor will need to check your blood at regular visits while you are using Azathioprine. Be sure to keep all appointments.
  • Azathioprine lowers the number of some types of blood cells in your body. Because of this, you may get infections more easily. To help with these problems, avoid being near people who are sick or have infections. Wash your hands often.
  • Azathioprine may increase your risk of developing certain types of cancer. Talk with your doctor about how this risk will affect you.

Possible Side Effects While Using Azathioprine:
Call your doctor right away if you notice any of these side effects:

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing.
  • Dark-colored urine.
  • Fever, chills, cough, sore throat, and body aches.
  • Muscle pain, lightheadedness or fainting.
  • Severe stomach pain, nausea, vomiting, or diarrhea.
  • Unusual bleeding, bruising, or weakness.
  • Yellowing of your skin or the whites of your eyes.

If you notice these less serious side effects while taking Azathioprine, talk with your doctor:

  • Mild skin rash or itching.
  • Hair loss.
  • Joint pain.
  • Sores or white patches on your lips, mouth, or throat.

If you notice other side effects that you think are caused by Azathioprine, tell your doctor.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088

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