Ritalin, also known as Methylphenidate, is a prescription medication used to treat Attention Deficit Hyperactivity Disorder (ADHD), a neurodevelopmental disorder characterized by symptoms of inattention, hyperactivity, and impulsivity. Ritalin works by increasing the levels of dopamine and norepinephrine in the brain, which helps to improve focus, attention, and impulse control. It is typically used in combination with behavioral therapy and lifestyle changes to help individuals with ADHD manage their symptoms and improve their daily functioning. Ritalin comes in various forms, including immediate-release tablets and extended-release capsules, and its effects typically start within 30 minutes after administration. However, it is important to note that Ritalin should only be used under the guidance of a healthcare professional and for a limited time period, as it can be habit-forming and may cause side effects such as insomnia, anxiety, and appetite suppression.