When you think about treatment for attention deficit hyperactivity disorder (ADHD), previously known as ADD, do you immediately jump to Ritalin? Many people equate ADHD treatment with medication. But it’s important to understand that medication for ADHD doesn’t work for everyone, and even when. Ritalin is used to treat ADHD in children, but doctors can prescribe Ritalin for adults as an off-label use. This eMedTV segment defines. Ritalin (methylphenidate) is used to treat attention deficit disorder (ADD) and narcolepsy. Includes Ritalin side effects, interactions and indications.