It usually takes one to two hours for Waklert 150 (armodafinil) to begin acting after oral intake. Peak effects often appear two to four hours following the administration. Individual sensitivity, metabolism, and whether the medication is taken on an empty stomach are some of the variables that might affect the time. While taking Waklert with meals may help minimise certain side effects including nausea, it may also slightly delay the onset. It provides consistent alertness and attention throughout the day, with benefits lasting up to 12 to 15 hours once activated. It is best taken in the morning under a doctor's supervision for greatest outcomes.