Focus on quetiapine.

Abstract:

:Quetiapine fumarate is a novel dibenzothiazepine antipsychotic developed by Zeneca. It is marketed under the trade name 'Seroquel'. Quetiapine is well tolerated and clinically effective in the treatment of schizophrenia. The initial hope of investigators was that quetiapine would have antipsychotic potential and that it might share some of the properties of clozapine without its toxicity to white blood cells. The effective dosage range is usually 300-450 mg/day split into two doses. The dose is titrated upwards from 25 mg twice daily from day 1 to 300 mg/day on day 4. Elderly patients or patients with liver problems should be started on lower doses. It is both superior to placebo and comparable to haloperidol in reducing positive symptoms at doses ranging from 150 mg/day to 750 mg/day, and is an effective treatment for negative symptoms. Somnolence is the most common adverse event. Abnormalities of the QT interval on ECG appear very infrequently and there is no need for a baseline ECG or blood pressure monitoring, as used to be the case with sertindole. There is no need for haematological monitoring as with clozapine. Quetiapine, across the full dosage range, is associated with no greater extrapyramidal symptoms than placebo. Quetiapine's general efficacy and side-effect profile suggest that, unless there are unforeseen post-marketing complications, it deserves a major place in the initial and long-term management of schizophreniform disorders.

journal_name

Curr Med Res Opin

authors

Green B

doi

10.1185/03007999909114085

keywords:

subject

Has Abstract

pub_date

1999-01-01 00:00:00

pages

145-51

issue

3

eissn

0300-7995

issn

1473-4877

journal_volume

15

pub_type

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