If i have taken cellcept (mycophenolate mofetil) for so many years can it effect my liver or is there a possiblity that it can ?

Usually no: Liver toxicity could happen. But while you are taking CellCept (mycophenolate mofetil) you doctor checks your tests including white cells and liver function. Many transplant patients take CellCept (mycophenolate mofetil) for long years with no problems. Far more common side effect is diarrhea that may require dose reduction. Finally, there is a risk benefit ratio. The benefit of CellCept (mycophenolate mofetil) in controlling autoimmune dz or transplant exceeds risks.