After 3 months of, diligently,being on Gilenya, daily, with no side effects, I think that I took the medication early one morning Sunday, yesterday,and proceeded to refill the pillbox for the week. At the end of the day, noticing that Sunday was filled, I was sure that I had already taken the medication for the day and did not take it again until today, Monday. If I was wrong and truly did miss a dose on Sunday, which I doubt, what are the possible effects? In advance, thank you for your response.