The best dosage for Artvigil 150mg depends on individual needs and tolerance. The standard recommended dose is 150 mg once daily, usually taken in the morning to promote wakefulness throughout the day. Some people find half a tablet (75 mg) sufficient, especially for mild sleepiness or cognitive enhancement. If you are new to Armodafinil, starting with half a dose and adjusting based on effects and side effects is a good approach. Avoid taking it too late in the day, as it can interfere with sleep. Always consult a doctor for personalized advice.