Adderall XR 20mg Adderall XR duration Adderall XR dosage Adderall XR vs Adderall Buy Adderall XR Order Adderall XR Adderall XR 20mg is the long-acting variation that survives in the body for approximately 12 hours after the last dosage. Although it begins its effects gradually over time as compared to immediate release variation. There is one more variant available, which is adderall IR. It functions promptly in the system, but its elements and active properties remain in the system for around 6 hours. Therefore to know about your adequate variant, have a consultation with your doctor. The medical authorities direct the adderall XR and adderall IR for the administration of the most common disorder that is ADHD. Although it is also prescribed for the management of narcolepsy to avoid day sleepiness. Both treatments are FDA approved and deliver effective results if used as per the guidelines. Therefore, before reaching under the therapy, go through reactions and general warnings.