Mycophenolic acid (MPA), and also called mycophenolate, is an immunosuppressant medication used to prevent rejection following organ transplantation and to treat Crohn's disease. Specifically it is used following kidney, heart, and liver transplantation. It can be given by mouth or by injection into a vein. It comes as mycophenolate sodium and mycophenolate mofetil. Mycophenolate is increasingly utilized as a steroid sparing treatment in autoimmune diseases and similar immune-mediated disorders including Behçet's disease, pemphigus vulgaris, immunoglobulin A nephropathy, small vessel vasculitides, and psoriasis. It is also used for retroperitoneal fibrosis along with a number of other medications. Specifically it has also be used for psoriasis not treatable by other methods.
Common side effects include nausea, infections, and diarrhea. Other serious side effects include an increased risk of cancer, progressive multifocal leukoencephalopathy, anemia, and gastrointestinal bleeding. Use during pregnancy may harm the baby. It works by blocking inosine monophosphate dehydrogenase (IMPDH), which is need by lymphocytes to make guanosine.
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