Cinnamon (Cinnamomum Burmanii) is one of the herbs that contains an activesubstance polyphenol that works by increasing insulin receptors in cells. This study uses 10 grams of cinnamon boiled with 100 ml of water. The purpose of this study was to determine the effect of cinnamon decoction on fasting blood sugar levels in type 2 diabetes mellitus patients with a research design Quasy Experiment.…