Adderall pill is a combination of four different amphetamine salts: dextroamphetamine saccharate, dextroamphetamine sulfate, amphetamine aspartate, and amphetamine sulfate. Experts aren’t sure exactly how Adderall tablet works in Attention Deficit Hyperactivity Disorder (ADHD) but suggest it blocks the reuptake of the neurotransmitters, dopamine, and norepinephrine, which increases their concentration in the neuronal synapse (the space between two nerves). Generic Adderall belongs to the group of medicines known as central nervous system stimulants.