Both of those IR and XR can cause a crash as anyone arrives down from your effects of the drug, but XR tends to have fewer obvious effects. Co-administration of ADDERALL XR and gastrointestinal or urinary alkalinizing agents need to be avoided. See total prescribing details for comprehensive boxed warning. https://adderall-xr-side-effects63726.blogunok.com/26905484/facts-about-adderall-xr-revealed