Esberitox N is a herbal product prescribed widely by doctors in Germany for over 50 years for the treatment and prevention of cold. It works by enhancing one’s immune system. Esberitox N has been shown to be most effective when taken at the first sign of cold. It can also be used as prevention during times when chances of catching a cold is high such as exam, travel or cold and flu season. Suitable for both children and adult.