Used primarily in organ transplantation to prevent rejection, especially in kidney, heart, and liver transplants. It works by suppressing the immune system, specifically by inhibiting the proliferation of T and B lymphocytes. Mycophenolate sodium is often part of a combination therapy that includes other immunosuppressants like cyclosporine and corticosteroids. It is also used in the treatment of autoimmune diseases such as lupus nephritis, where immune system overactivity damages the kidneys. The enteric-coated formulation helps reduce gastrointestinal side effects compared to other forms of mycophenolate.