Adderall is available in two options. There is an all-inclusive delivery option known as Adderall XR and an early delivery option marketed as Adderall IR. Adderall IR is a four-hour short-acting drug. It is sold in 5mg. Adderall XR lasts 10-12 hours and is available in 20mg. Buy Adderall 30 mg online This is a stimulant that has been shown to relieve ADHD symptoms in 70-80% of patients. It increases certain chemicals in the brain, a key one being dopamine. Adderall reduces the symptoms of ADHD hyperactivity and improves a patient's hearing abilities.