Ritalin medication works by changing specific natural chemicals in the brain to increase wakefulness, decrease impulsive behavior, and improve attention. Ritalin is available online at Careskit.com Take this medication as directed by your physician, which is usually once a day in the morning, with or without food. There are two dosage forms of Ritalin: 10 mg and 20 mg. Please click the aforementioned link for further information.