The present invention relates to 4-((1R,3S)-6-chloro-3-phenyl-indan-1-yl)-1,2,2-trimethyl-piperazine and the salts thereof with activity at dopamine D1 and D2 receptors as well as the serotonin 5HT2 receptor for the treatment of diseases in the central nervous system in a once weekly dosing regime.