150 mg of armodafinil is a typical, often recommended dosage and isn't usually seen as "a lot," each person's experience with the drug varies. While some people may suffer jitteriness, anxiety, headaches, or sleeplessness, Waklert 150 mg offers significant wakefulness to many adults with fewer adverse effects than larger dosages. Armodafinil can disrupt sleep if taken late because of its lengthy half-life (about 12–15 hours).