Description

Imuran 50mg tablets are used to help prevent organ rejection in transplant patients and to treat certain autoimmune diseases.The key points are:

• Imuran (azathioprine) is an immunosuppressant medication that reduces the activity of the immune system.
• It is used to enhance the survival of organ transplants, such as kidney, heart, and liver transplants. It helps the body accept the new organ.
• Imuran is also used to treat moderate to severe inflammatory bowel diseases like Crohn’s disease and ulcerative colitis, as well as autoimmune conditions like rheumatoid arthritis, lupus, and others.
• The usual starting dose for transplant patients is 3-5 mg/kg per day, which may be reduced to a maintenance dose of 1-3 mg/kg per day. For rheumatoid arthritis, the starting dose is typically 1 mg/kg per day.
• Patients taking Imuran require regular blood tests to monitor for potential side effects.
• Imuran 50mg tablets are available in bottles of 100 tablets.
  

  Mechanism of Action

  Imuran (azathioprine) is a prodrug that is converted in the body to 6-mercaptopurine (6-MP). 6-MP interferes with the synthesis of DNA and RNA, which inhibits the proliferation of rapidly dividing cells, such as activated T and B lymphocytes. This suppresses the immune system and prevents rejection of transplanted organs.

  Dosage and Administration

  • Imuran is typically taken once or twice daily with food to minimize gastrointestinal side effects.
  • The dosage is individualized based on the patient’s response and tolerability. Transplant patients usually start at 3-5 mg/kg/day and are maintained at 1-3 mg/kg/day.
  • For autoimmune conditions, the starting dose is usually 1 mg/kg/day, which may be increased up to 2.5 mg/kg/day.
  • Patients must be monitored closely, especially when initiating or adjusting the dose, due to the risk of bone marrow suppression.

  Unique Considerations

  • Imuran has a slow onset of action, so it may take 2-3 months to see the full therapeutic effect.
  • Certain genetic variants can affect the metabolism of Imuran, so genotyping may be recommended prior to starting therapy.
  • Imuran interacts with many common medications, so careful monitoring and dose adjustments are required.
  • Long-term use of Imuran increases the risk of certain cancers, such as lymphoma and skin cancer, so regular cancer screening is important.
    

    Azathioprine

    Immunosuppressive Medication

    More

    Trade Names

    Azasan, Imuran, Jayempi, others

    Other Names

    AZA

    Pregnancy Category

    AU: D

    Imuran (azathioprine) 50mg tablets work by suppressing the immune system through the following mechanisms:

    1. Azathioprine is a prodrug that is converted in the body to 6-mercaptopurine (6-MP). 6-MP acts as a purine antagonist and requires cellular uptake and intracellular metabolism to thioguanine nucleotides (TGNs) for immunosuppression.
    2. The TGNs and other metabolites inhibit de novo purine synthesis and purine nucleotide interconversions, which prevents proliferation of cells involved in the immune response.
    3. The TGNs are also incorporated into nucleic acids, further contributing to the immunosuppressive effects.
    4. Azathioprine inhibits many pathways in nucleic acid biosynthesis, thereby preventing proliferation of cells involved in the immune response.
    5. The methylnitroimidazole moiety, a metabolite of azathioprine, appears to modify its activity compared to 6-MP, but its exact role is unclear.

    Key Benefits of Imuran 50mg Tablets

    1. Immunosuppression: Imuran is an immunosuppressant medication that reduces the activity of the immune system. This helps prevent organ rejection in transplant patients and treat autoimmune diseases.
    2. Steroid-sparing effect: Imuran can reduce the required dosage of corticosteroids, thereby lowering the toxicity associated with long-term high-dose steroid use.
    3. Treats a variety of autoimmune conditions: In addition to transplant rejection, Imuran is used to treat conditions like rheumatoid arthritis, lupus, inflammatory bowel disease, and others.
    4. Long-term management: Imuran can be used for long-term maintenance therapy in many autoimmune and transplant patients.

    Key Ingredients of Imuran 50mg Tablets

    The active ingredient in Imuran 50mg tablets is:

    • Azathioprine – 50mg per tablet

    The inactive ingredients include:

    • Lactose monohydrate
    • Magnesium stearate
    • Potato starch
    • Povidone
    • Stearic acid

    Imuran tablets are film-coated and have a yellow, round, biconvex appearance.

  Dosage

  • The typical starting dose for transplant patients is 3-5 mg/kg per day, which may be reduced to a maintenance dose of 1-3 mg/kg per day.
  • For autoimmune conditions like rheumatoid arthritis, the starting dose is usually 1 mg/kg per day, which can be increased up to 2.5 mg/kg per day.
  • Imuran should be taken at least 1 hour before or 3 hours after food or milk.
  • Patients require regular blood tests to monitor for potential side effects and to adjust the dose as needed.

  Storage

  • Imuran 50mg tablets should be stored at 20-25°C (68-77°F) in a dry place, protected from light.
  • The tablets should be kept in the original container until ready to use.
  • Imuran should be kept out of reach of children.

  Reviews

  • Imuran is generally well-tolerated, but long-term use can increase the risk of certain cancers like lymphoma and skin cancer.
  • Patients report that Imuran can take several weeks or months to have a noticeable therapeutic effect.
  • Regular monitoring of blood counts is essential, as Imuran can cause bone marrow suppression.
  • Some patients experience gastrointestinal side effects like nausea, vomiting, or diarrhea, especially when first starting the medication.
  • Overall, reviews indicate that Imuran is an effective immunosuppressant when used as directed and with appropriate medical supervision.                                                                Imuran 50mg tablets should be stored below 30°C, protected from light, in the original container until ready to use. The tablets should not be stored in a bathroom, near a sink, in the car, or on a window sill, as heat and dampness can damage some medicines.Imuran tablets should not be taken after the expiry date printed on the pack. The expiry date refers to the last day of that month. If taken after the expiry date, Imuran may not work as well.