Endocrine Health contains herbs known to support the endocrine system. This formula tonifies and supports the entire endocrine system. Endocrine Health is a dietary supplement composed exclusively of tonic herbs and is not for the treatment or prevention of any condition. It is a general tonic formulation with broad spectrum tonic actions. It is both a Yin tonic and a Yang tonic. This formulation tonifies all Three Treasures, Jing, Qi and Shen very effectively. For those wishing to use just one tonic formula, this would be an excellent choice.* All herbs in Endocrine Health are Di Tao, meaning they are superior quality and come from a historically authentic source.