The article examines the efficacy of Huabeipai Wangshi Mingjing or Wang's Juemingjing (WJ) extract as a treatment for diabetes mellitus. WJ extract is produced from traditional Chinese medicine (TCM) herbs such as Juemingzi, Shanyao, Honghua, Shanzhizi, and Gancao. Based on the clinical trials conducted on patients with Type II diabetes mellitus, WJ extract was proven to lower fasting blood glucose levels and reduce symptoms of thirst, excessive drinking, and excessive urination.