Can you tell me how long it takes 30mg adderall (dextroamphetamine and racemic amphetamine) last?

Duration of adderall (dextroamphetamine and racemic amphetamine): The tablets of Adderall (dextroamphetamine and racemic amphetamine) will usually give a positive effect for 4-6 hours. The extended release forms of Adderall (dextroamphetamine and racemic amphetamine) xr can be expected to have a duration of 9 to 12 hours as the dose is increased, the duration will increase somewhat, but there is a limit to the dose giving a positive response without dose related side effects.