Provigil is a powerful prescription medication used to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy. It is available to buy online from trusted, certified pharmacies. It works by increasing the levels of dopamine and norepinephrine in the brain, which helps to improve focus and concentration. It also helps to reduce impulsive behavior and improve organization and task completion. With its potent effects, it can help those with ADHD and narcolepsy manage their symptoms and lead more productive lives.