ZBT ACCENT contains active ingredients can quickly pass through blood-brain barrier, enter damaged part of brain’s language center (Broca’s Area) by increasing blood concentration to promote regeneration of brain tissue cells and enhancing language functions. ZBT ACCENT suitable for improve stiff tongue and retardation in speech, aphasia, drooling, dysphagia (difficulty swallowing), choking cough. It’s also helps to improve language disorders for the middle aged and elderly as well. In addition, ZBT ACCENT effectively protects vocal cords and improving lung-power, which is suitable for the vocal specialist or professional.