The FDA approved Modafinil, the active component present in Modvigil in 1998. The molecular formula of Modafinil is C15H15NO2S and its molecular mass is 273.35. This drug can develop dependence. It belongs to a class of drugs called wakefulness-promoting agents/ Psychoanaleptic. The precise mechanism of Modafinil is not clinically determined. It has several vital effects on the brain. It is thought to improve the concentration of several neurotransmitters in the brain such as orexin, dopamine, and norepinephrine. Orexin controls sleep-wake cycles, dopamine increases attentiveness, which helps to remain focused for an extended duration, while norepinephrine increases mental energy. Modafinil is a smart drug that is available for sale at a local pharmacy or online drugstore. The action of Modvigil medication is observed within 20 to 60 minutes after taking the medicine orally, while its effect lasts up for about five to ten hours.