PURPOSE: A composition containing ginger extract or shogaol is provided to prevent or treat Parkinson's disease. CONSTITUTION: A pharmaceutical composition for preventing or treating Parkinson's disease contains ginger extract or shogaol and a pharmaceutically acceptable carrier. The composition is used in the form of a powder, granule, tablet, capsule, suspension, emulsion, or syrup. A method for extracting ginger extract comprises: a step of extracting ginger with C1-C4 alcohol; a step of adding water and n-hexane to the extract; and a step of adding ethyl acetate to an aqueous layer to extract and to separate ethyl acetate layer.
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