Forsythia is a traditional Chinese medicine and does not have a hypoglycemic effect. The herb is the dried whole grass of the Rosaceae plant. It is sweet, slightly bitter and flat in nature. It belongs to the liver, stomach and large intestine meridians. It has the efficacy of clearing away heat and detoxification (removing heat and toxicity from the body), stopping dysentery and stopping bleeding. It is used in treating damp-heat diarrhea (diarrhea caused by feeling damp-heat evil), carbuncle, swollen sores and poison, blood-heat epistaxis (vomiting blood and nosebleed due to blood-heat), blood in stool, and leakage of menstruation (menstruation with excessive amount or dripping). It is recommended that patients strictly under the guidance of traditional Chinese medicine practitioners to use Forsythia Chinensis rationally, if high blood sugar occurs, it is also necessary to follow the doctor’s instructions for targeted treatment, avoid the unauthorized use of Forsythia Chinensis, so as to avoid delaying the condition.