Mycophenolate mofetil (MMF), a pro-drug containing mycophenolic acid (MPA) as active agent, is approved for the treatment of acute graft rejection after kidney-, heart- and liver-transplantation, and was shown in 1995 to be effective in inhibiting the development of experimental autoimmune uveoretinitis. Further studies proved it to be a safe and effective steroid-sparing immunomodulatory for reducing the recurrence rate of non-infectious intermediate uveitis in humans. Although the adverse effect profile of MMF is comparatively benign, gastrointestinal adverse effects are a major concern and may limit its clinical benefit, because they may necessitate dose reduction, interruption, or even discontinuation of MMF.