Buy Concerta 54 MG  Online is a brand name for a drug called methylphenidate which is also sold under the brand name Ritalin. Concerta 54 mg is used for the treatment of ADHD symptoms in adults and children who are at least 6 years old. Methylphenidate is a central nervous system stimulant, which means it works to increase activity in the brain and nervous system of dopamine and norepinephrine in certain brain parts. Concerta 54 mg is a powerful medicine used after a doctor’s advice and you should take it regularly to get the most benefit from it.