It is used to prevent organ rejection in people who have received a kidney transplant. It is usually taken along with other medications to allow your new kidney to function normally. Azathioprine is also used to treat rheumatoid arthritis.

Nausea or vomiting may occur. Taking this medication after meals may help lessen these effects. Temporary hair loss may also occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

It is contraindicated in patients with severe infections, severe anemia, decreased blood platletes, severe decrease in white blood cells, moderate to severe kidney impairment, thiopurine S-methyltransferase deficiency, Hepatosplenic T-cell Lymphoma, malignant lymphoma and pregnancy,

Before taking azathioprine, tell your doctor or pharmacist if you are allergic to it, or to mercaptopurine; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, liver disease, cancer, a certain enzyme disorder (TPMT deficiency).

This medication may increase your risk of developing skin cancer. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors. Your doctor may direct you to avoid phototherapy while you use this product. Ask your doctor for details.

This medication passes into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding.

This drug may pose risks to your pregnancy, therefore please do not take this medicine without consulting your doctor first.

Some products that may interact with this drug are: febuxostat, past or present use of certain cancer drugs (such as cyclophosphamide, melphalan), other drugs that weaken the immune system/increase the risk of infection (such as rituximab, tofacitinib).