Product image of Imasup (Azathioprine) supplied by GNH India

Imasup

Active Ingredient:
Azathioprine
Origin:
EU

Imasup (Azathioprine)

Azathioprine, the active ingredient in Imasup, is an immunosuppressant presented as an oral formulation for oral use. It is employed to prevent organ transplant rejection and to treat several autoimmune conditions, including rheumatoid arthritis and inflammatory bowel disease, in adult patients.

GNH India supplies Imasup as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, transplant centres, oncology centres, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Bausch Health Ireland Limited

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Indications & Clinical Uses

  • Azathioprine is used across immune‑mediated conditions and transplant medicine to reduce pathological immune activity.
  • Organ transplant rejection: helps maintain graft viability by suppressing immune‑mediated attack.
  • Rheumatoid arthritis: reduces joint inflammation and slows disease progression.
  • Inflammatory bowel disease (Crohn's disease, ulcerative colitis): diminishes intestinal inflammation and maintains remission.

How It Works

  • Azathioprine is a prodrug that is converted intracellularly to 6‑mercaptopurine, which interferes with de novo purine synthesis. By limiting purine availability, it blocks DNA replication in rapidly dividing lymphocytes, thereby reducing T‑cell and B‑cell proliferation and dampening the overall immune response.

Side Effects

Azathioprine may cause a range of adverse reactions, from mild to severe.

Common Side Effects

  • Nausea or vomiting
  • Decreased white blood cell count (leukopenia)
  • Elevated liver enzymes
  • Mild rash or itching

Serious or Rare Side Effects

  • Severe bone marrow suppression leading to pancytopenia
  • Hepatotoxicity with jaundice or hepatic failure
  • Increased risk of opportunistic infections and certain malignancies

Precautions & Warnings

  • Before initiating therapy, clinicians should evaluate baseline laboratory values and monitor patients regularly.
  • Baseline blood count: obtain complete blood count and liver function tests.
  • Infection risk: screen for latent viral infections (e.g., hepatitis B, TB).
  • Pregnancy considerations: assess risks versus benefits; avoid unless clearly indicated.
  • Drug monitoring: adjust dose based on TPMT enzyme activity when available.
  • Store below 25°C: keep in the original pack, protect from moisture.

Avoid Interactions

Azathioprine interacts with several medicines that can alter its efficacy or toxicity.

Major Interactions (Avoid)

  • Allopurinol or febuxostat: may cause severe bone marrow suppression.
  • Live vaccines: increased risk of infection due to immunosuppression.

Moderate Interactions (Monitor Closely)

  • Warfarin: may enhance anticoagulant effect, requiring INR monitoring.
  • Ribavirin: can increase hematologic toxicity.
  • Antacids containing magnesium or aluminum: may reduce azathioprine absorption.

Frequently Asked Questions

Imasup, containing azathioprine, is prescribed to prevent organ transplant rejection, manage rheumatoid arthritis, and treat inflammatory bowel disease such as Crohn's disease and ulcerative colitis by suppressing abnormal immune activity.

Azathioprine is converted to 6‑mercaptopurine, which blocks purine synthesis needed for DNA replication. This inhibition reduces the proliferation of lymphocytes, thereby dampening the immune response that drives transplant rejection and autoimmune inflammation.

The dosage of Imasup is individualized by the prescribing clinician based on the specific indication, patient weight, renal and hepatic function, and therapeutic response. Patients should follow the exact regimen provided by their healthcare professional.

The safety of azathioprine during pregnancy or lactation is not fully established. Clinicians weigh potential benefits against risks, and the drug is generally avoided unless the therapeutic advantage justifies possible fetal exposure. Breastfeeding mothers should consult their physician.

To request Imasup, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Azathioprine offers oral administration and a well‑characterized safety profile compared with biologic agents that require injection or infusion. While some newer agents may provide faster onset, azathioprine remains a cost‑effective option for long‑term maintenance in many transplant and autoimmune settings.

Imasup should be stored below 25 °C in a dry environment, kept in its original packaging to protect from moisture, and away from direct sunlight. No refrigeration is required for this oral formulation.

Imasup is taken orally, usually with food or a glass of water to reduce gastrointestinal irritation. The exact timing and frequency are determined by the prescribing clinician and should be adhered to strictly.

Serious risks include severe bone marrow suppression leading to pancytopenia, hepatotoxicity, and an increased susceptibility to infections and certain cancers. Patients should be monitored regularly for blood count changes and liver function abnormalities.

Imasup is contraindicated in patients with known hypersensitivity to azathioprine or its metabolites, those with severe bone marrow failure, active uncontrolled infections, or significant liver disease. Caution is also advised for individuals with deficient TPMT enzyme activity.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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