The present invention relates to 4-((1R,3S)-6-chloro-3-phenyl-indan-1-yl)-1,2,2-trimethyl-pi perazine 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.本發明係關於對多巴胺D1及D2受體以及血清素5HT2受體具有活性之4-((1R,3S)-6-氯-3-苯基-二氫茚-1-基)-1,2,2-三甲基-哌及其鹽,其用於在每週一次給藥攝生法中治療中樞神經系統疾病。