CellCept 500 mg (mycophenolate mofetil) is a prescription immunosuppressant medication. Its primary use is to prevent the body from rejecting transplanted organs—specifically kidney, liver, and heart transplants. It weakens the immune system so it does not attack the new organ.Primary UsesOrgan Transplant Rejection Prevention: Used in adults and children over 3 months of age, typically alongside other immunosuppressants (like corticosteroids or cyclosporine).Off-Label Autoimmune Treatments: Dermatologists and rheumatologists may prescribe it off-label to treat severe autoimmune conditions, such as lupus, systemic sclerosis, or vasculitis.Important Safety InformationPregnancy Warning: CellCept can cause miscarriages and severe birth defects. Effective birth control is required for both men and women during and shortly after treatment.Infection Risk: Because it suppresses the immune system, it increases your risk of serious infections and certain cancers.For official prescribing guidelines or to check approved indications in your specific region, refer to the detailed Drugs.com CellCept Profile or consult your transplant specialist.