Armodafinil, a wakefulness-promoting drug frequently recommended for sleep disorders such as narcolepsy, obstructive sleep apnea, and shift work sleep disorder, is a component of Artvigil 150. For most people, Artvigil 150's effects last ten to fifteen hours. After taking it, it usually starts to act within one to two hours, progressively raising alertness and decreasing tiredness. Doctors frequently advise taking it in the morning to prevent sleep issues at night because to its extended duration. However, the precise length may differ based on individual reaction, dose, and metabolism. When using it, always adhere to medical recommendations.