BACKGROUND Some studies have indicated the efficacy of quetiapine in the treatment of generalized anxiety disorder (GAD). OBJECTIVE The purpose of this study was to systematically review the efficacy, acceptability, and tolerability of quetiapine in adult patients with GAD. METHODS The SCOPUS, MEDLINE, CINAHL, Cochrane Central Register of Controlled Trials, and ClinicalTrials.gov databases ...

BACKGROUND Many patients with schizophrenia exhibit only a partial response to conventional antipsychotic agents, making them difficult to treat adequately. OBJECTIVE This analysis models the cost-effectiveness of quetiapine compared with haloperidol in partial responders with schizophrenia. METHODS Outcome data from the Partial Responders International schiZophrenia Evaluation (PRIZE) clin...

This 5-wk, open-label, comparative study investigated the effects of quetiapine and haloperidol on behavioural, cognitive and circadian rest-activity cycle disturbances in patients with Alzheimer's disease (AD). Out of a total of 30 patients enrolled in the study, there were 22 completers, 11 in the quetiapine group (mean age 81.9+/-1.8 yr, mean baseline MMSE 19.9+/-1.3, mean dose 125 mg) and 1...

Objective: Little is known about lorazepam-quetiapine combination doses requirements for mania and mixed bipolar episodes despite frequent use. It was previously assumed that, by adding a benzodiazepine, antipsychotic dose could be lowered. The aim of the current study was to test this assumption and to evaluate dosage of lorazepam and quetiapine, when used together under routine clinical condi...

METHODS Patients (n=302) with bipolar I disorder (manic episode) were randomised to 12 weeks' double-blind treatment with quetiapine (flexibly dosed up to 800 mg/day), placebo, or haloperidol (up to 8 mg/day). The primary efficacy outcome variable was change from baseline to Day 21 in Young Mania Rating Scale (YMRS) score. RESULTS YMRS score improved with quetiapine at Day 21 (-12.29 versus -...

The antipsychotic drug quetiapine is extensively metabolized by CYP3A4, but little is known about the possible influence of the polymorphic enzyme CYP3A5. This in vitro study investigated the relative importance of CYP3A4 and CYP3A5 in the metabolism of quetiapine and compared the metabolic pattern by the two enzymes, in the presence or absence of cytochrome b(5). Intrinsic clearance (CL(int)) ...

A novel, specific, reliable, and accurate capillary zone electrophoretic method was developed and validated for the simultaneous determination of aliskiren hemifumarate, amlodipine besylate, and hydrochlorothiazide in their triple mixture dosage form. Separation was carried out in a fused-silica capillary (57.0 cm total length and 50.0 cm effective length, 75.6 μm internal diameter) by applying...

Quetiapine has demonstrated efficacy in schizophrenia, bipolar disorder and in the treatment of specific symptom clusters such as agitation and sleep problems in mood disorders. In this review, randomized controlled studies demonstrating efficacy, safety and tolerability of quetiapine in major depressive disorder (MDD) and general anxiety disorder (GAD) are evaluated. The results show that quet...

The atypical antipsychotic quetiapine fumarate is available both as an immediate release (IR) and as an extended release (XR) formulation allowing flexibility of dosing for individual patients. Approved uses of quetiapine XR include the treatment of schizophrenia (including maintenance therapy for prevention of relapse), the treatment of bipolar disorder (manic and depressive episodes), and the...

Antipsychotic-induced thrombocytopenia is generally rare, but seems to occur more frequently with quetiapine. Accordingly, the relative risk of thrombocytopenia can be described as very rare with loxapine and clozapine (o 0.01%), uncommon with risperidone (X 0.1%, o 1%), but very common with quetiapine (X 10%). However, very few cases are reported in the literature, with one published case of i...