People used to get confused when they decided to buy Adderall online or offline, because of its look. Adderall has two different release forms XR and Ir. And each form has its own doses like 15 mg, XR 15 mg, 10 mg, XR 10 mg, 20 mg, XR 20 mg, etc. Each dosage has its own shape, color, size, and imprints.