Buy Adderall IR and Adderall XR Online What’re the differences between Adderall IR and Adderall XR? Adderall IR and Adderall XR are seen as compatible in some properties and vary in some characteristics, although both can't be used together and without a doctor's approval. To know the significant similarities and differences read below- Similarities Adderall IR and Adderall XR are directed for the same treatment that is treating narcolepsy and ADHD. Both are classified under the schedule 2 controlled substance. Therefore, both are highly potent to be misused. Additionally, both come under the same drug class group known as a stimulant. Both functions influence some natural chemicals in the brain that contribute to the hyperactivities. Both variants have similar active elements that are amphetamine and dextroamphetamine. Dissimilarities- Adderall IR produces its effects immediately after consumption onward. However, Adderall XR begins its products gradually after usage of the dosage. The effects remain in the body for around 6 hours after Adderall IR usage. In contrast, the consequences of adder all IR stay in the body for up to 12 hours after the consumption. The active elements (amphetamine and methamphetamine) are in different proportion in both variants. In short, Adderall IR is used on an as-needed basis, whereas Adderall XR is used on an around the clock treatment.