Buy Ritalin refers to the online availability of the prescription medication Ritalin, a brand name for the stimulant medication methylphenidate. Ritalin is commonly prescribed to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy. The keyword suggests an interest in purchasing Ritalin through online platforms. It's crucial to note that buying prescription medications online should only be done through legitimate and reputable sources, as the misuse of such medications can have serious health consequences. Always consult with a licensed healthcare professional before obtaining and using prescription medications.