The Food and Drug Administration (FDA) approved Adderall in 1960. The agency also has approved the combination of amphetamine and dextroamphetamine as a generic drug.
DSM Pharmaceuticals makes the brand-name drug, and many drug companies make a generic version.
Adderall belongs to a class of drugs called central nervous system stimulants. The drug works by increasing levels of the brain chemical dopamine, which stimulates the brain.
This stimulation has a calming and focusing effect on people with ADHD.