Order Adderall to treat ADHD What are the FDA-approved uses of Adderall? Adderall comes in the market as the best stimulant for the treatment of ADHD. It has its major forms, i.e., Adderall IR and Adderall XR. However, both are different in the mechanism rate. IR survives in the body for up to 6 hours after the last dosage, whereas XR survives in the body for up to 12 hours after the last dosage. Adderall is also used to treat narcolepsy. While treating narcolepsy, Adderall operates its mechanism to keep you stable in the daytime. In short, it reduces daytime sleepiness. However, one should avoid the consumption of Adderall if one is not under the precise sleeping disorder. Therefore, whenever you buy Adderall online and offline so firstly, take the medical consultation.