Methylphenidates are stimulant drugs used to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy. It works by changing levels of substances in the brain like dopamine and norepinephrine. This helps increase focus, attention, and control behavior. Methylphenidates come in both immediate and extended release forms. They are generally taken orally but can also be administered via injection. Nurses must carefully monitor patients taking methylphenidates and watch for side effects like insomnia, headaches, and appetite/weight changes.