Insomnia is a body disorder characterized by decreased sleep quality in the form of difficulty initiating or maintaining sleep. Insomnia is often associated with serotonergic cell death. Cinnamon (Cinnamomum burmannii) is a plant studied to have anti-inflammatory and antioxidant effects. This study aims to determine the efficacy of the nonpolar fraction of cinnamon on serotonin levels. This stu…