Buy Adderall XR 20mg Online Overnight What is Adderall XR 20mg prescribed for? Adderall XR 10mg is the third lower subset of its family and contains the active element IN the ratio of 20mg. The major active element in this medication is amphetamine and dextroamphetamine. These elements function together in the system to treat ADHD and narcolepsy. While treating narcolepsy, it functions by keeping you awake during the daytime. However, it can be used for different purposes that are not mentioned here. In case if you use this medication for non-approved goals so you may meet the unwanted results. This dosage of the Adderall XR varies from one sufferer to another. The difference in the dosage occurs due to different health status and body functioning. Therefore, to know about your adequate dosage, meet the doctor. The doctor goes through several factors to determine the relevant factors. The treatment usually begins from the lowest dosage, and once the treatment exists, the doctor may enhance the ongoing dosage only when the necessity arises.