How long will 15mg of ir adderall (dextroamphetamine and racemic amphetamine) last compared to the 15mg of xr.

The entire 15 mg. of: Adderall (dextroamphetamine and racemic amphetamine) immediate release is delivered over 5-6 hours, sometimes less or more depending on how rapidly a patient metabolizes Mixed Amphetamine Salts. The entire 15 mg. dose in Adderall (dextroamphetamine and racemic amphetamine) XR is delivered over ~ 12 hours, with the same caveats.

6 vs 8-10 hours: The tablets usually have an effect for 5-6 hours. The XR tablets theoreticcally have an effect for 8-10 hours. The difference is the IR tablets will reach a higher peak level during its action duration. The XR capsules will reach a lower peak as it is spread out over a longer period. The actual effect of the two forms may not have the same effect because the difference in peak levels and durat