Thioprine 50mg Tablet is a member of the class of medications known as immunosuppressants. It is used in conjunction with other medications to stop your body from rejecting an organ following a transplant, such as a liver, heart, or kidney. An immunosuppressive medication called thioprine 50mg Tablet suppresses your immune response and lessens the likelihood that your body may attack the donated organ. When your immune system fights a new organ because it perceives it as an invader, organ rejection occurs. To assist your body accept the new organ and suppress the immune system, this medication may be taken in conjunction with other medications.