Yes! You can buy adderall xr 15 mg for the ADHD system.It is available online in the given link for the person who has symptoms like ADHD or Narcolepsy. If you want to take a prescription then go through your doctor. Either you can buy it online through the given link. It helps us to improve focusing power and impulsivity in the brain. It helps us to improve the sleep and wake cycle. Simply, it is a type of drug which helps to treat ADHD or narcolepsy type disorder.