Buy Ritalin online is used to deal with ADHD (Attention Deficit Hyperactivity Disorder) and Narcolepsy. It is a brand-name medicine of the generic drug methylphenidate. Ritalin medication is available in two forms: Ritalin oral tablets and Ritalin LA extended-release oral capsules. The extended-release variation signifies the medicine is long-acting. It is important to take Ritalin dosage under the guidance of professional doctors.