Ritalin Novartis in Pakistan is a prescription medicine containing Methylphenidate Hydrochloride, widely used to treat Attention Deficit Hyperactivity Disorder (ADHD) and Narcolepsy. Manufactured by Novartis, Ritalin works by stimulating certain parts of the brain to improve focus, attention span, impulse control, and wakefulness. It is trusted worldwide as one of the most effective ADHD treatments.