It is a central nervous system stimulant that is suggested by healthcare professionals for treating ADHD and narcolepsy (sleep disorder) above the age of 6 years. The Ritalin pill is FDA-approved and available in the US market under the brand name Methylphenidate. This drug helps to improve focus and impulse control. It has a high risk of abuse as this medicine is classified a Schedule II controlled substance. Ritalin is available in the form of generic oral tablets, capsules, and oral solutions.