The correct way to eat chasteberry is to take it internally in a decoction of water. Chasteberry is a traditional Chinese medicine, is the dried mature fruit of Chasteberry plant, its flavor is bitter, sweet, cool in nature, into the human liver and kidney meridians. It has the effect of nourishing the liver and kidney, brightening the eyes and darkening the hair. It is mainly used for treating yin deficiency of the liver and kidney (deficiency of yin in the liver and kidney), dizziness and tinnitus, lumbar and knee soreness and weakness (a feeling of soreness and weakness of the lumbar and knee), premature whitening of the beard, and darkening of the eyes and unclear vision. Adverse reactions and contraindications of taking Chasteberry are not clear, note that it should be used with caution in cases of coldness of the spleen and stomach (weak and cold spleen and stomach) diarrhea and Yang deficiency. If there is a need for medication, it is necessary to use under the guidance of a Chinese doctor to identify the evidence, and not to use the drug blindly on their own, so as not to cause adverse consequences.