Overview
Azathioprine is a prescription drug approved by the U.S. Food and Drug Administration (FDA) to prevent organ rejection for people receiving transplants, but it is also used to treat autoimmune conditions including myasthenia gravis. Azathioprine is sold under the brand names Imuran and Azasan.

Azathioprine is in a class of medications called immunosuppressants. It works by suppressing the immune system, which helps reduce the symptoms of myasthenia gravis.

How do I take it?
Azathioprine comes in a tablet to be taken orally, usually once or twice a day. Your doctor will explain the correct dose for you.

Side effects
Common side effects of azathioprine include nausea, vomiting, and diarrhea.

Rare but serious side effects of azathioprine include rash, fever, weakness, muscle pain, and an increased risk for certain cancers and serious infections.

For more details about this treatment, visit:

Azathioprine — MedlinePlus
https://medlineplus.gov/druginfo/meds/a682167.html

Azathioprine — Myasthenia Gravis Foundation of America
https://myasthenia.org/Events/azathioprine