Ritalin is one of the ADHD reliever medicine. It is only the trade name of the medicine, the actual medicine name is Methylphenidate. This makes changes in the natural substances in the brain, which lead to an increase in the ability to pay attention, a naturally controlled behavior, and stay focused on a particular activity for a long time. Of the different variant dosages, Ritalin 20 mg is the highest dose of the medicine in the form of a tablet