Excessive daytime sleepiness associated with narcolepsy, sleep apnea, or shift work disorder can be treated with the brain stimulant Modafinil 200mg. It promotes wakefulness and helps users to stay awake and active. It also enhances concentration, memory, thinking ability, and other cognitive functions. Within 30 minutes of intake, Modafinil 200mg begins its action, and its effect lasts for about 12 to 15 hours. Therefore, Modafinil 200mg is an effective solution for curing excessive sleepiness in the daytime.