Imuran is a prescription medication employed in treating symptoms associated with Rheumatoid Arthritis as well as preventing the rejection of transplanted organs. Imuran can be administered as a standalone treatment or in combination with other medications.Azathioprine is a type of anti-inflammatory medication that is utilized for treating rheumatoid arthritis as well as other inflammatory disorders. The drug functions by restraining the blood cells that trigger inflammation. Azathioprine is administered to mitigate the signs and symptoms of rheumatoid arthritis, which may include joint inflammation, discomfort, fatigue, and the duration of morning stiffness. Imuran is the brand name frequently used to refer to Azathioprine.