The levorotatory form of dopa found esp. in broad beans or prepared synthetically and used in treating Parkinson's disease. Also called levodopa.

左度巴(左二羊巠苯基丙氨酸；一种能提高脑中度巴素水平的药物，对减轻巴金氏病的僵化、发抖及其他病状有效。亦称levodopa)。