Mercaptopurine
"I was diagnosed with Autoimmune Hepatitis in Nov of 2013. I was prescribed IMURAN as well as Prednisone. I was unable to take the IMURAN due to side effect of violent vomiting. I was prescribed Mercaptopurine and within 1 week became stable and have improved weekly. Seven months later,  I now take only the Mercaptopurine and my enzymes have stayed stabilized."