Artvigil 150mg (Armodafinil) is a medication primarily used to treat sleep disorders such as narcolepsy, sleep apnea, and shift work sleep disorder. While it can be effective in promoting wakefulness, it may also cause a range of side effects. Common side effects include headaches, dizziness, nausea, dry mouth, and difficulty sleeping (insomnia). Some individuals might experience anxiety, nervousness, or stomach discomfort.