if you are planning to buy Ritalin 10mg online, then this article is for you. There are two disorders for which Ritalin helps with the treatment. These are ADHD (Attention Deficit Hyperactivity Disorder) and Narcolepsy (a sleeping disorder). ADHD makes a child or person less attentive, low focus and concentration, and hyperactive. However, Narcolepsy causes sleep attacks making a person sleep anytime and anywhere regardless of the situation.