(1R,4R)-6'-FLUORO-(N-METIL OU N,N-DIMETIL)-4-FENIL-4',9'-DI-HIDRO-3'H-ESPIRO[CICLO-HEXANO-1,1'-PIRANO-[3,4,B]INDOL]-4-AMINA PARA O TRATAMENTO DE FIBROMIALGIA E DE SÍNDROME DE FADIGA CRÓNICA
The invention relates to a pharmaceutical dosage form comprising (1r,4r)-6'-Fluoro-(N-methyl- or N,N-dimethyl-)-4-phenyl-4',9'-dihydro-3'H-spiro-[cyclohexane-1,1'-pyrano[3,4,b]-indol]-4-amine or a physiologically acceptable salt thereof, for use in the treatment of fibromyalgia or chronic fatigue syndrome.