| abstract |
The invention relates to a pharmaceutical dosage form for administration twice daily, once daily or less frequently, which contains 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. |