Active clinical trials for "Schizophrenia"

The purpose of this study is to compare the efficacy of oral risperidone (Risperdal) to risperidone long-acting (Consta) in reducing alcohol use in persons diagnosed with schizophrenia or schizoaffective disorder.

Controlled studies using the orthomolecular approach have been few (Deutsch, Ananth, & Ban, 1977). Those that were done were performed in chronic schizophrenia or in populations that included bipolar and schizoaffective patients. Both of these diagnostic groups are not today considered to benefit from the orthomolecular approach. Moreover, some negative studies of high-dose niacin were done in patients who were not otherwise given general counseling for good diet as described above. Therefore, this proposal is to study in a controlled manner carefully defined first onset schizophrenic patients using the protocol advocated by Osmond and Hoffer (1962). Patients can enter the study if they have been ill less than 1 year and are in their first hospitalization.

This study will examine the effects of ondansetron on auditory nerve activity in people with schizophrenia who are being treated with new antipsychotics.

Schizophrenic individuals are typically nicotine dependent smokers who find it difficult to quit smoking. The purpose of this study is to determine the effectiveness of bupropion SR (commonly known as Zyban) in combination with a nicotine transdermal patch (NTP), in helping schizophrenic individuals quit smoking. In addition, this study will evaluate how the combination of bupropion SR and NTP affects psychiatric symptoms and medication side effects.

Treatment with conventional antipsychotics such as haloperidol has little effect or may sometimes even worsen negative symptoms (such as blunted affect, emotional withdrawal, and poor rapport) of schizophrenia. The newer "atypical" antipsychotics agents, such as olanzapine, has shown improvement in the treatment of negative symptoms in acute trials. The purpose of this study is to compare an investigational compound (asenapine) with a marketed agent (olanzapine) in the treatment of stable subjects with persistent negative symptoms of schizophrenia for 6 months. Patients completing this study may be eligible to participate in an extension 6 months of treatment. Patients are required to have stable symptoms prior to entry into study.

To provide treatment to eligible subjects who have successfully completed one of the following phase III ziprasidone studies, A1281028, A1281044, A1281045 (NCT00136994) or A1281088 (NCT00143351).

The purpose of this study is to evaluate the effects of a CYP2D6 inhibitor, paroxetine, on the pharmacokinetics of a single dose of orally administered paliperidone ER and to evaluate the safety and tolerability of both treatments in healthy men

Lurasidone HCl is a compound being developed for the treatment of schizophrenia. This clinical study is designed to test the hypothesis that lurasidone is effective, tolerable, and safe as compared with quetiapine XR long term among schizophrenic outpatients with chronic schizophrenia.

The primary purpose of this study is to evaluate the pharmacokinetics and relative bioavailability of paliperidone ER formulations with slow, target, and fast in vitro release rates after administration of a single 12 mg dose. The slow and fast releasing ER tablets have in vitro release rates outside the current commercial specifications. Therefore, in order to support widening of the specification limits, this study will be performed. The target formulation to be used is representative of the commercial formulation. Other objectives of this study are 1) to compare the relative bioavailability of paliperidone ER formulations with slow, target, and fast in vitro release rates to the paliperidone IR formulation; 2) to explore the in vitro in vivo correlation (IVIVC) for the paliperidone ER formulation; and 3) to evaluate the safety and tolerability of the different paliperidone ER formulations.

The purpose of this study is to assess the cardiovascular safety of paliperidone in patients with schizophrenia or schizoaffective disorder, with particular attention to the length of the QT/QTc interval, to measure and review other electrocardiogram (ECG) parameters, such as QRS and PR intervals, to explore the relationship between the pharmacokinetics of paliperidone and ECG parameters of interest, and to explore the safety and tolerability of paliperidone