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Clinical Trial Summary

The objective of the study is to determine whether Panax Ginseng with multiple interactions with key components of brain signaling pathway, can augment the effects of antipsychotics in Schizophrenia. We are primarily interested to examine the actions of Ginseng combined with antipsychotics in improving the ways patients diagnosed with schizophrenia behave in social environment, store, process and retrieve information.


Clinical Trial Description

Schizophrenia is a serious mental disorder affecting individuals in multiple ways: behavior control, emotional and information processing and the functional levels conforming to societal norms. Despite recent advances in medication therapy in treating the target symptoms of schizophrenia , subsets of patients diagnosed with schizophrenia continue to exhibit negative symptoms ( social withdrawal,apathy, lack of drive )and cognitive impairment (memory, attention, judgment and reasoning). Recently, there has been interest to explore the efficacy of avenue of dietary and herbal supplements with known pharmacological actions in treatment and prevention of neuropsychiatric disorders, especially bipolar and schizophrenia.

We hypothesize that Panax Ginseng , with multiple interactions with chemical pathways in the brain described as neurotransmitter systems (Dopamine, GABA and NMDA ) can improve the residual symptoms of schizophrenia when added to the antipsychotics currently used in the treatment of schizophrenia. Furthermore, in view of previous studies of Ginseng in enhancing memory , we hypothesize that the standardized formulation of Ginseng (Ginsana-115 from Boehringer Ingelheim-Pharmaton,Switzerland ) will optimize the antipsychotics in cognition impairment and negative symptoms. In the 18-week RCT cross-over study, schizophrenic subjects will be treated with either Ginsana-115 ( 100 mg or 200 mg by oral route) or placebo in a cross-over design. we plan to recruit 60 subjects diagnosed as schizophrenia from the four sites : London-St. Thomas, Ontario, Canada; Kingston Ontario Canada; Thunderbay, Ontario Canada and Middlesex, United Kingdom. ;


Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00401089
Study type Interventional
Source Lawson Health Research Institute
Contact
Status Completed
Phase Phase 1/Phase 2
Start date December 2002
Completion date October 2007

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