Ritalin is used to treat ADHD(attention deficit hyperactivity disorder). The brand name of Ritalin is methylphenidate. The FDA has approved it as a treatment for both ADHD and sleep disorders such as narcolepsy. Buy Ritalin 10 mg Online is known for its stimulating effects. ADHD patient feels awake, happy, energetic, excited, and more attentive after taking methylphenidate. However, if you use this stimulant drug in excess, you may not feel the same. Ritalin has some side effects.