<p>The wakefulness-inducing drug armodafinil is the active ingredient in the medicine Artvigil 150mg. It is commonly used to alleviate symptoms of narcolepsy, obstructive sleep apnea, and shift work sleep disorder, all of which contribute to excessive daytime sleepiness. Artvigil enhances mental capacity by promoting alertness, concentration, and lucidity. It may improve memory, concentration, and other mental abilities.</p>