Referring to indanosulfamida derivatives or one of its pharmaceutically acceptable salts, such as n - [(1S) - - - - 2,2,5,7 tetrafluoro 2,3 Dihydro 1h inden - triazin-1-yl] sulfamide, N - [(1S) - 2,2,4,7 - tetrafluoro - 2 - 3 - dihydro 1h inden - 1 - il] sulfamide, (+) - N - (2,2,4,6,7 pentafluoro - 2.3 - dihydro - 1H inden - 1 - il) sulfonamide. These compounds are useful in the treatment of EpilepsyReferida a derivados de indanosulfamida o una de sus sales farmaceuticamente aceptables, tales como N-[(1S)-2,2,5,7-tetrafluoro-2,3-dihidro-1H-inden-1-il]sulfamida, N-[(1S)-2,2,4,7-tetrafluoro-2-3-dihidro-1H-inden-1-il]sulfamida, (+)-N-(2,2,4,6,7-pentafluoro-2,3-dihidro-1H-inden-1-il)sulfamida. Dichos compuestos son utiles en el tratamiento de la epilepsia