The most serious risk associated with CellCept is the possible development of cancer, particularly lymphoma and skin cancer. The most common side effects with CellCept used in combination with ciclosporin and corticosteroids (seen in more than 1 patient in 10) are sepsis (blood infection), gastrointestinal candidiasis (a fungal infection of the stomach or gut), urinary tract infection (infection of the structures that carry urine), herpes simplex (a viral infection that causes cold sores), herpes zoster (a viral infection that causes chickenpox and shingles), leucopenia (low white blood cell counts), thrombocytopenia (low blood platelet counts), anaemia (low red blood cell counts), vomiting, abdominal (tummy) pain, diarrhoea and nausea (feeling sick). For the full list of side effects reported with CellCept, see the Package Leaflet.
CellCept should not be used in people who may be hypersensitive (allergic) to mycophenolate mofetil or mycophenolic acid. It should not be used in women are breast-feeding. CellCept treatment is not recommended for use in pregnant women, and should only be started in women after a negative pregnancy test and if effective contraception is used before, during and for six weeks after CellCept treatment.