Modafinil is a prescription medication primarily used to treat excessive daytime sleepiness caused by conditions like narcolepsy, obstructive sleep apnea, and shift work sleep disorder. Classified as a wakefulness-promoting agent, Modafinil works by altering neurotransmitters in the brain, helping improve alertness and cognitive function without the intense stimulation of traditional stimulants. Though it is sometimes discussed for off-label use in enhancing concentration, its approved use is strictly within the scope of sleep-related disorders. Unlike amphetamines, Modafinil has a lower risk of dependency, but it should only be used under medical supervision due to potential side effects and drug interactions. This overview provides a foundational understanding of how Modafinil works, its approved medical applications, and its relevance in sleep medicine. It is not intended as medical advice but aims to educate readers about one of the more frequently prescribed treatments in the management of sleep disorders. For more, visit : https://enquirypharmacy.org/category/modafinil/