Modafinil typically takes about 30 to 60 minutes to kick in, with its effects gradually building over the first few hours. When taken on an empty stomach, it may act faster, while taking it with food can delay its onset slightly. Once it starts working, users usually experience increased alertness, wakefulness, and improved focus, which can last for several hours, peaking around 2 to ... https://www.medzsquare.com/au/modalert-200