Tone audition is a food supplement composed of an extract of ginkgo leaves which promotes blood microcirculation and therefore good hearing. Magnesium contributes to the electrolyte balance in order to allow an optimal transmission of the electrical signals of the nervous system. Finally, niacin contributes to the normal functioning of the nervous system. These complementary actions of ginkgo biloba, magnesium and niacin are important for many body functions and in particular for the maintenance of normal hearing. Magnesium, vitamin C and niacin also help reduce fatigue.