Adverse events ( AEs ) observed in > @ % of either the armodafinil @ mg or placebo groups and more frequently with @ mg armodafinil were diarrhea ( @ % -LSB- @/@ -RSB- vs @ % -LSB- @/@ -RSB- ) , and nausea ( @ % -LSB- @/@ -RSB- vs @ % -LSB- @/@ -RSB- ) , respectively .