Sleep is a very important physiological process, as it regulates the body’s functions. It is responsible for promoting / facilitating energy conservation, synthesis and secretion of hormones and proteins, learning and memory through brain changes. Sleep is mainly driven by the circadian cycle, which involves exposure to light, hormones such as melatonin, and hypothalamic activity. The compounds that help regulate sleep work in different pathways, they can facilitate the process of falling asleep, increase the duration of continuous sleep or improve the quality of sleep.