title: Rapid initiation of quetiapine well tolerated as compared with the conventional initiation regimen in patients with schizophrenia or schizoaffective disorders.
abstract: A 2-week, randomized, parallel-group open trial was designed to evaluate the safety and tolerability of a rapid initiation regimen with a higher dose of quetiapine (up to 800 mg/d by Day 4) than that used in the conventional initiation regimen of quetiapine (up to 400mg/d by Day 5) in patients with schizophrenia or schizoaffective disorders. Forty patients were recruited and randomly (3:1) assigned to either the group with rapid initiation of quetiapine or the group with conventional initiation. At the end of the investigation, the difference between the groups in the incidence of adverse events was not significant; a significant drop in the Barnes Akathisia Rating Scale and Simpson-Angus Scale scores was observed only in the group with the rapid initiation regimen. The groups did not differ in terms of improvement on the Clinical Global Impression-Severity of Illness and Positive and Negative Syndrome Scale at the end of the study. The results of our 2-week study suggest that rapid initiation with a higher dose of quetiapine (up to 800 mg/d by Day 4) is well tolerated in patients with schizophrenia or schizoaffective disorders and does not compromise efficacy relative to the conventional initiation.
authors: Jian Nan Mental Hospital by the Department of Health, Executive Yuan, Taiwan.
authors: Cheng-Cheng
authors: CC
authors: Hsiao
authors: Kun-Po
authors: KP
authors: Chen
authors: Chang-Jer
authors: CJ
authors: Tsai
authors: Liang-Jen
authors: LJ
authors: Wang
authors: Chih-Ken
authors: CK
authors: Chen
authors: Shih-Ku
authors: SK
authors: Lin
mesh_terms: D000328:Adult; D014150:Antipsychotic Agents / Q000009:adverse effects / Q000627:therapeutic use*; D003248:Constipation / Q000139:chemically induced; D003987:Dibenzothiazepines / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011618:Psychotic Disorders / Q000188:drug therapy*; D000069348:Quetiapine Fumarate; D012559:Schizophrenia / Q000188:drug therapy*; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D014150:Antipsychotic Agents; D003987:Dibenzothiazepines; D000069348:Quetiapine Fumarate