Could you tell me the differences between adderal vs. concerta?

Different classes: Concerta is methylphenidate delivered in a sophisticated capsule that uses osmotic pressure to deliver the medication over time. Adderall (dextroamphetamine and racemic amphetamine) is a form of amphetamine that is delivered either as immediate release or in beaded form with half released immediately and the second half released 3 1/2 to 4 hours later. Both are stimulants with similar benefits, efficacy, and se.